Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
226 results · page 2 of 5
Oct 13, 2026Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.CVE-2026-108127 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper authorization in DNS Server allows an authorized attacker to perform tampering locally.CVE-2026-103560 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Improper authorization in DNS Server allows an authorized attacker to perform tampering locally.
- Product
- Windows Server 2012
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 16, 2026CoreDNS is a DNS server written in Go.CVE-2026-86003 · Other software · coredns · reported by GitHubHigh 7.5
CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners in plugin/pkg/doh/doh.go, core/dnsserver/server_quic.go, and core/dnsserver/server_grpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy used by UDP, TCP, and DNS-over-TLS. An unauthenticated client can send an RFC 2136 UPDATE that the proxy or forward plugin passes unchanged to an update-capable upstream. If that upstream trusts CoreDNS's source address or connection and does not require an attacker-unknown end-to-end TSIG, the request appears to originate from CoreDNS and can add, replace, or delete DNS records, redirect traffic, take over names, alter mail routing, or disrupt the writable zone. This issue is fixed in version 1.14.7.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 16, 2026CoreDNS is a DNS server written in Go.CVE-2026-82399 · Other software · coredns · reported by GitHubHigh 7.5
CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/server_quic.go, and core/dnsserver/server_grpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before dns.DefaultMsgAcceptFunc validates the fixed header. An unauthenticated client can use DNS name compression and excessive section counts to amplify allocation before the plugin chain, so plugin-level rate limiting cannot prevent concurrent requests from exhausting memory and terminating CoreDNS. The ordinary UDP and TCP listeners are not affected because they validate the header first. This issue is fixed in version 1.14.7.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 10, 2026The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS queryCVE-2026-89092 · Other software · The GNU C Library · reported by 3ff69d7a-14f2-4f67-a097-88dee7810d18Medium 4.2
The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted DNS server for name resolution, with the compromised DNS server being capable of processing records large enough to result in a stack overflow in an nscd thread stack. During experimentation, bind 9 was unable to handle large records, but that could change in future or with a different name server. In typical installations, nscd is executed in an isolated context as its own user without a shell, due to which any compromise of that service is isolated. There is a remote possibility of nscd cache corruption if an attacker manages to get the stack pointer into a desired point in the heap, potentially resulting in other caches in nscd being overwritten with corrupt data through the stack overflow, until the buggy code path eventually results in a crash. Finally, a crash in nscd may result in performance degradation when resolving names, but it does not result in a deni
- Product
- glibc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceware.orgsourceware.org
Sep 8, 2026Use after free in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2026-77505 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026Use after free in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2026-69989 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026Concurrent execution using shared resource with improper synchronization ('race condition') in DNS Server allows an unauthorized attacker to execute code over aCVE-2026-69827 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Concurrent execution using shared resource with improper synchronization ('race condition') in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026Concurrent execution using shared resource with improper synchronization ('race condition') in DNS Server allows an unauthorized attacker to execute code over aCVE-2026-69782 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Concurrent execution using shared resource with improper synchronization ('race condition') in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 30, 2026A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected.CVE-2026-58218 · Other software · Red Hat · reported by Red HatMedium 5.3
A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.
- Product
- Red Hat Enterprise Linux 10
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.combugzilla.redhat.com
Jul 16, 2026CoreDNS is a DNS server written in Go.CVE-2026-62994 · Other software · coredns · reported by GitHubLow 3.7
CoreDNS is a DNS server written in Go. From 1.9.4 until 1.14.5, a network DNS client allowed to request AXFR for a CoreDNS zone can trigger a panic when CoreDNS is configured with k8s_external headless-service zone transfers and Kubernetes contains a headless service endpoint with no declared ports; plugin/kubernetes/object/endpoint.go creates Port: -1, plugin/k8s_external/msg_to_dns.go skips that service, plugin/k8s_external/transfer.go sends an empty []dns.RR batch, and plugin/transfer/transfer.go indexes records[0] without checking the batch is non-empty. This issue is fixed in version 1.14.5.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 16, 2026CoreDNS is a DNS server written in Go.CVE-2026-62309 · Other software · coredns · reported by GitHubHigh 7.5
CoreDNS is a DNS server written in Go. Prior to 1.14.4, a single 28-byte UDP datagram can crash the CoreDNS process when the proxyproto plugin is enabled because plugin/pkg/proxyproto/proxyproto.go PacketConn.ReadFrom handles a PROXY v2 header with non-UDP transport such as family byte 0x11, reassigns addr from a nil readFrom result after parseProxyProtocol errors, and calls addr.String() in the warning log before ServeDNS recovery applies. This issue is fixed in version 1.14.4.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 16, 2026CoreDNS is a DNS server written in Go.CVE-2026-62299 · Other software · coredns · reported by GitHubMedium 5.3
CoreDNS is a DNS server written in Go. Prior to 1.14.5, the CoreDNS rewrite plugin supports edns0 rewrite rules with an optional revert flag, and two response rules, edns0SetResponseRule and edns0ReplaceResponseRule[T] in plugin/rewrite/edns0.go, call res.IsEdns0() and immediately dereference the returned *dns.OPT without a nil check when a downstream plugin returns a response with no OPT record. A remote, unauthenticated client can send a single ordinary DNS query matching a rewrite edns0 <local|nsid|subnet> <set|append|replace> ... revert rule, causing ResponseReverter in plugin/rewrite/reverter.go to panic, return SERVFAIL, and degrade availability, or crash the CoreDNS process if the debug directive disables recovery. This issue is fixed in version 1.14.5.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 14, 2026Relative path traversal in DNS Server allows an authorized attacker to execute code over an adjacent network.CVE-2026-50426 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.8
Relative path traversal in DNS Server allows an authorized attacker to execute code over an adjacent network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 14, 2026Use after free in DNS Server allows an authorized attacker to execute code over a network.CVE-2026-49169 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8
Use after free in DNS Server allows an authorized attacker to execute code over a network.
- Product
- Windows Server 2025
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 26, 2026An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumCVE-2026-36478 · Other software · reported by MITREHigh 7.5
An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumLibrary.Net/Dns/DnsClient.cs components
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 23, 2026Poweradmin is a web-based DNS administration tool for PowerDNS server.CVE-2026-54588 · Other software · poweradmin · reported by GitHubCritical 9.6
Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled `HTTP_HOST` request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An unauthenticated attacker can poison the `redirect_uri` sent to the Identity Provider, causing the IdP to redirect the victim's authorization code to an attacker-controlled server - resulting in full account takeover with no credentials required. Versions 4.2.4 and 4.3.3 patch the issue.
- Product
- poweradmin
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 23, 2026Poweradmin is a web-based DNS administration tool for PowerDNS server.CVE-2026-47693 · Other software · poweradmin · reported by GitHubMedium 6.9
Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 are vulnerable to CSV Injection (Formula Injection) in its log export functionality. User-controlled data — specifically the username field — is written to exported CSV files without sanitizing formula trigger characters (=, +, -, @). When an administrator exports activity logs and opens the resulting CSV in a spreadsheet application (Microsoft Excel, LibreOffice Calc, Google Sheets), any formula stored in a username is executed by the application. This can be used for phishing attacks against administrators or data exfiltration. Versions 4.2.4 and 4.3.3 patch the issue.
- Product
- poweradmin
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 18, 2026Docker Sandboxes (sbx) enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any querieCVE-2026-12039 · Other software · Docker · reported by security@docker.comMedium 5.7
Docker Sandboxes (sbx) enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which the threat model treats as untrusted, can therefore encode data into DNS labels for an attacker-controlled domain and exfiltrate it through a DNS covert channel, bypassing the configured allowlist.
- Product
- Docker Sandboxes
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddocs.docker.comgithub.com
May 19, 2026Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records.CVE-2026-45557 · Other software · Technitium · reported by 9119a7d8-5eab-497f-8521-727c672e3725Medium 6.9
Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network traffic. Fixed in 15.0.
- Product
- DNS Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comraw.githubusercontent.com
May 13, 2026A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network CVE-2026-0264 · Network & remote access · Palo Alto Networks · reported by psirt@paloaltonetworks.comHigh 7.2
A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network access to cause a denial of service (DoS) condition (all PAN-OS platforms except Cloud NGFW and Prisma Access) or potentially execute arbitrary code by sending specially crafted network traffic (PA-Series hardware only). Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
- Product
- Cloud NGFW
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurity.paloaltonetworks.comcert-portal.siemens.com
May 5, 2026CoreDNS is a DNS server written in Go.CVE-2026-35579 · Other software · coredns · reported by GitHubHigh 8.2
CoreDNS is a DNS server written in Go. In versions prior to 1.14.3, the gRPC, QUIC, DoH, and DoH3 transport implementations incorrectly handle TSIG authentication. For gRPC and QUIC, the server checks whether the TSIG key name exists in the configuration but never calls dns.TsigVerify() to validate the HMAC. If the key name matches a configured key, the tsigStatus field remains nil and the tsig plugin treats the request as successfully authenticated regardless of the MAC value. For DoH and DoH3, the issue is more severe: the DoHWriter.TsigStatus() method unconditionally returns nil, and the server never inspects the TSIG record at all. Any request containing a TSIG record is treated as authenticated over DoH and DoH3, even if the key name is invalid and the MAC is arbitrary. An unauthenticated network attacker can exploit this to bypass TSIG-protected functionality such as AXFR/IXFR zone transfers, dynamic DNS updates, or other TSIG-gated plugin behavior. The DoH and DoH3 variants have a lower exploitation bar because the attacker does not need to know a valid TSIG key name. This issue has been fixed in version 1.14.3. As a workaround, disable gRPC, QUIC, DoH, and DoH3 listeners
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comaccess.redhat.com
May 5, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-33489 · Other software · coredns · reported by GitHubHigh 8.2
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead of an actual longest-suffix match to select the winning zone. As a result, a permissive parent-zone transfer rule can override a restrictive subzone rule depending on zone name ordering (e.g., "example.org." > "a.example.org." lexicographically). This allows an unauthorized remote client to perform AXFR/IXFR for the subzone and retrieve its full zone contents. This issue has been fixed in version 1.14.3.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 5, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-33190 · Other software · coredns · reported by GitHubHigh 8.7
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on non-plain-DNS transports (DoT, DoH, DoH3, DoQ, and gRPC) because it trusts the transport writer's TsigStatus() instead of performing verification itself. The DoH and DoH3 writer's TsigStatus() always returns nil, the DoT server does not set TsigSecret on the dns.Server, and the DoQ and gRPC writers also unconditionally return nil. This allows an unauthenticated remote client to bypass TSIG-based authentication and access resources intended to be restricted behind a tsig require all policy. Plain DNS over TCP and UDP are not affected. This issue has been fixed in version 1.14.3.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 5, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-32936 · Other software · coredns · reported by GitHubHigh 8.7
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-HTTPS (DoH) GET path accepts oversized dns= query parameter values and performs URL query parsing, base64 decoding, and DNS message unpacking before rejecting the request. Unlike the POST path, which applies a bounded read via http.MaxBytesReader limited to 65536 bytes, the GET path has no equivalent size validation before expensive processing. A remote, unauthenticated attacker can repeatedly send oversized DoH GET requests to force high CPU usage, large transient memory allocations, and elevated garbage-collection pressure, leading to denial of service. This issue has been fixed in version 1.14.3.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 5, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-32934 · Other software · coredns · reported by GitHubHigh 8.7
CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-QUIC (DoQ) server can be driven into unbounded goroutine and memory growth by a remote client that opens many QUIC streams and sends only 1 byte per stream. When the worker pool is full, CoreDNS still spawns a goroutine per accepted stream to wait for a worker token. Additionally, active workers block indefinitely in io.ReadFull() with no per-stream read deadline, allowing an attacker to pin all workers by sending a single byte so the read blocks waiting for the second byte of the DoQ length prefix. This enables an unauthenticated remote attacker to cause memory exhaustion and OOM-kill. This issue has been fixed in version 1.14.3. No known workarounds exist.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 26, 2026Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.CVE-2026-42255 · Other software · Technitium · reported by MITREHigh 7.2
Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
- Product
- DnsServer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 7, 2026Aardvark-dns is an authoritative dns server for A/AAAA container records.CVE-2026-35406 · Other software · containers · reported by GitHubMedium 6.2
Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.
- Product
- aardvark-dns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 7, 2026Dual DHCP DNS Server 8.01 improperly accepts and caches UDP DNS responses without validating that the response originates from a legitimate configured upstream CVE-2025-71058 · Other software · reported by MITRECritical 9.1
Dual DHCP DNS Server 8.01 improperly accepts and caches UDP DNS responses without validating that the response originates from a legitimate configured upstream DNS server. The implementation matches responses primarily by TXID and inserts results into the cache, enabling a remote attacker to inject forged responses and poison the DNS cache, potentially redirecting victims to attacker-controlled destinations.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 6, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-26018 · Other software · coredns · reported by GitHubHigh 7.5
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 6, 2026CoreDNS is a DNS server that chains plugins.CVE-2026-26017 · Other software · coredns · reported by GitHubHigh 7.7
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 25, 2026rldns is an open source DNS server.CVE-2026-27831 · Other software · bluedragonsecurity · reported by GitHubHigh 7.5
rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.
- Product
- rldns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 2, 2026The DDNS update function in ADM fails to properly validate the hostname of the DDNS server's TLS/SSL certificate.CVE-2026-24932 · Network & remote access · ASUSTOR · reported by security@asustor.comHigh 8.9
The DDNS update function in ADM fails to properly validate the hostname of the DDNS server's TLS/SSL certificate. Although the connection uses HTTPS, an improper validated TLS/SSL certificates allows a remote attacker can intercept the communication to perform a Man-in-the-Middle (MitM) attack, which may obtain the sensitive information of DDNS updating process, including the user's account email, MD5 hashed password, and device serial number.This issue affects ADM: from 4.1.0 through 4.3.3.ROF1, from 5.0.0 through 5.1.1.RCI1.
- Product
- ADM
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 8, 2026An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate-limiting componentCVE-2025-50334 · Other software · Red Hat · reported by MITREHigh 7.5
An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate-limiting component
- Product
- Red Hat OpenShift Dev Spaces
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 8, 2026CoreDNS is a DNS server that chains plugins.CVE-2025-68151 · Other software · coredns · reported by GitHubMedium 6.6
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 24, 2025Improper handling of DNS over TCP in Simple DNS Plus v9 allows a remote attacker with querying access to the DNS server to cause the server to return request paCVE-2025-61430 · Other software · reported by MITREMedium 6.5
Improper handling of DNS over TCP in Simple DNS Plus v9 allows a remote attacker with querying access to the DNS server to cause the server to return request payloads from other clients. This happens when the TCP length prefix is malformed (len differs from actual packet len), and due to a concurrency/buffering issue, even when the lengths match. A length prefix that is smaller than the actual packet size increases information leakage. In summary, this vulnerability allows an attacker to see DNS queries of other clients.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordma-personal.notion.siteincognitotgt.me
Sep 9, 2025CoreDNS is a DNS server that chains plugins.CVE-2025-58063 · Other software · coredns · reported by GitHubHigh 7.1
CoreDNS is a DNS server that chains plugins. Starting in version 1.2.0 and prior to version 1.12.4, the CoreDNS etcd plugin contains a TTL confusion vulnerability where lease IDs are incorrectly used as TTL values, enabling DNS cache pinning attacks. This effectively creates a DoS condition for DNS resolution of affected services. The `TTL()` function in `plugin/etcd/etcd.go` incorrectly casts etcd lease IDs (64-bit integers) to uint32 and uses them as TTL values. Large lease IDs become very large TTLs when cast to uint32. This enables cache pinning attacks. Version 1.12.4 contains a fix for the issue.
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 6, 2025CoreDNS is a DNS server that chains plugins.CVE-2025-47950 · Other software · coredns · reported by GitHubHigh 7.5
CoreDNS is a DNS server that chains plugins. In versions prior to 1.12.2, a Denial of Service (DoS) vulnerability exists in the CoreDNS DNS-over-QUIC (DoQ) server implementation. The server previously created a new goroutine for every incoming QUIC stream without imposing any limits on the number of concurrent streams or goroutines. A remote, unauthenticated attacker could open a large number of streams, leading to uncontrolled memory consumption and eventually causing an Out Of Memory (OOM) crash — especially in containerized or memory-constrained environments. The patch in version 1.12.2 introduces two key mitigation mechanisms: `max_streams`, which caps the number of concurrent QUIC streams per connection with a default value of `256`; and `worker_pool_size`, which Introduces a server-wide, bounded worker pool to process incoming streams with a default value of `1024`. This eliminates the 1:1 stream-to-goroutine model and ensures that CoreDNS remains resilient under high concurrency. Some workarounds are available for those who are unable to upgrade. Disable QUIC support by removing or commenting out the `quic://` block in the Corefile, use container runtime resource limits to
- Product
- coredns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddatatracker.ietf.orggithub.com
May 6, 2025Terraform WinDNS Provider allows users to manage their Windows DNS server resources through Terraform.CVE-2025-46735 · Other software · nrkno · reported by GitHubLow 1.1
Terraform WinDNS Provider allows users to manage their Windows DNS server resources through Terraform. A security issue has been found in Terraform WinDNS Provider before version `1.0.5`. The `windns_record` resource did not sanitize the input variables. This could lead to authenticated command injection in the underlyding powershell command prompt. Version 1.0.5 contains a fix for the issue.
- Product
- terraform-provider-windns
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 11, 2025Use after free in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2025-24064 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows Server 2008 R2 Service Pack 1
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 3, 2025Denial of service in DNS-over-QUIC in Technitium DNS Server <= v13.2.2 allows remote attackers to permanently stop the server from accepting new DNS-over-QUIC cCVE-2024-56946 · Other software · Technitium · reported by MITREMedium 5.3
Denial of service in DNS-over-QUIC in Technitium DNS Server <= v13.2.2 allows remote attackers to permanently stop the server from accepting new DNS-over-QUIC connections by triggering unhandled exceptions in listener threads.
- Product
- Dnsserver
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 3, 2024Mullvad VPN through 2024.1 on Android does not set a DNS server in the blocking state (after a hard failure to create a tunnel), and thus DNS traffic can leave CVE-2024-34446 · Other software · mullvad · reported by MITREHigh 7.5
Mullvad VPN through 2024.1 on Android does not set a DNS server in the blocking state (after a hard failure to create a tunnel), and thus DNS traffic can leave the device. Data showing that the affected device was the origin of sensitive DNS requests may be observed and logged by operators of unintended DNS servers.
- Product
- mullvad_vpn
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26233 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26231 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26227 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26224 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26223 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26222 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Apr 9, 2024Windows DNS Server Remote Code Execution VulnerabilityCVE-2024-26221 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Windows DNS Server Remote Code Execution Vulnerability
- Product
- Windows Server 2019
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmsrc.microsoft.commsrc.microsoft.com
Feb 11, 2024ExpressVPN before 12.73.0 on Windows, when split tunneling is used, sends DNS requests according to the Windows configuration (e.g., sends them to DNS servers oCVE-2024-25728 · Other software · expressvpn · reported by MITREHigh 7.5
ExpressVPN before 12.73.0 on Windows, when split tunneling is used, sends DNS requests according to the Windows configuration (e.g., sends them to DNS servers operated by the user's ISP instead of to the ExpressVPN DNS servers), which may allow remote attackers to obtain sensitive information about websites visited by VPN users.
- Product
- expressvpn
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbleepingcomputer.comexpressvpn.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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