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.
22 results
Jul 1, 2026A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing.CVE-2026-14258 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to 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.comaccess.redhat.com
Jun 23, 2026dhcpcd through 10.3.2, fixed in commit 78ea09e, contains a heap use-after-free vulnerability in the control socket handling within src/control.c that allows locCVE-2026-56117 · Other software · NetworkConfiguration · reported by VulnCheckMedium 5.7
dhcpcd through 10.3.2, fixed in commit 78ea09e, contains a heap use-after-free vulnerability in the control socket handling within src/control.c that allows local unprivileged attackers to trigger memory corruption when privilege separation is disabled. Attackers can connect to the control socket and send a privileged command such as -x, causing control_recvdata() to free the client object while the same READ+HANGUP event subsequently reaches control_hangup() with the stale pointer, resulting in a use-after-free condition exploitable in deployments using --disable-privsep or where privsep initialization has failed with the control socket operating in mode 0666.
- Product
- dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comvulncheck.com
Jun 23, 2026dhcpcd through 10.3.2, fixed in commit 708b4a5, contains a memory leak vulnerability in the IPv6 Router Advertisement route information handling that allows an CVE-2026-56116 · Other software · NetworkConfiguration · reported by VulnCheckHigh 7.1
dhcpcd through 10.3.2, fixed in commit 708b4a5, contains a memory leak vulnerability in the IPv6 Router Advertisement route information handling that allows an unauthenticated same-link attacker to cause denial of service by sending crafted Router Advertisements. Attackers can repeatedly send Router Advertisements containing Route Information options with a lifetime of zero, triggering unfreed allocations in routeinfo_findalloc() that cause linear memory exhaustion and eventual daemon crash.
- Product
- dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comvulncheck.com
Jun 23, 2026dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unCVE-2026-56114 · Other software · NetworkConfiguration · reported by VulnCheckMedium 6
dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.
- Product
- dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comvulncheck.com
Jun 23, 2026dhcpcd through 10.3.2, fixed in commit 5733d3c, contains a heap use-after-free vulnerability that allows unauthenticated same-link attackers to crash the daemonCVE-2026-56113 · Other software · NetworkConfiguration · reported by VulnCheckMedium 6
dhcpcd through 10.3.2, fixed in commit 5733d3c, contains a heap use-after-free vulnerability that allows unauthenticated same-link attackers to crash the daemon by sending a crafted DHCPv6 RENEW reply with RFC6603 OPTION_PD_EXCLUDE and both preferred and valid lifetimes set to zero. Attackers acting as or impersonating a DHCPv6 server can trigger dhcp6_deprecatedele() to free a delegated child address while an outer TAILQ_FOREACH_SAFE iterator in dhcp6_deprecateaddrs() still holds the freed pointer, causing a use-after-free when TAILQ_REMOVE is reached.
- Product
- dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comvulncheck.com
Jun 15, 2026A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options.CVE-2025-70102 · Other software · reported by MITREMedium 6.3
A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a NULL pointer of type 'struct dhcp_opt' when an unexpected/invalid option token or parsing state causes the lookup to yield NULL. The instrumented fuzzing build reports 'runtime error: member access within null pointer of type struct dhcp_opt' and aborts.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 5, 2019dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.CVE-2019-11766 · Other software · Dhcpcd Project · reported by MITRECritical 9.8
dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.combugs.debian.org
Apr 28, 2019dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.CVE-2019-11579 · Other software · Dhcpcd Project · reported by MITREMedium 5.3
dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comlists.debian.org
Apr 28, 2019auth.c in dhcpcd before 7.2.1 allowed attackers to infer secrets by performing latency attacks.CVE-2019-11578 · Other software · Dhcpcd Project · reported by MITREMedium 5.9
auth.c in dhcpcd before 7.2.1 allowed attackers to infer secrets by performing latency attacks.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comroy.marples.name
Apr 28, 2019dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses.CVE-2019-11577 · Other software · Dhcpcd Project · reported by MITRECritical 9.8
dhcpcd before 7.2.1 contains a buffer overflow in dhcp6_findna in dhcp6.c when reading NA/TA addresses.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comroy.marples.name
Feb 7, 2017dhcpcd before 6.10.0 allows remote attackers to cause a denial of service (invalid read and crash) via vectors related to the option length.CVE-2016-1504 · Other software · Dhcpcd Project · reported by MITREHigh 7.5
dhcpcd before 6.10.0 allows remote attackers to cause a denial of service (invalid read and crash) via vectors related to the option length.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordroy.marples.nameroy.marples.name
Apr 17, 2016dhcpcd before 6.10.0, as used in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-04-01 and other products, mismanages optiCVE-2016-1503 · Other software · Dhcpcd Project · reported by MITRECritical 9.8
dhcpcd before 6.10.0, as used in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-04-01 and other products, mismanages option lengths, which allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow) via a malformed DHCP response, aka internal bug 26461634.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordroy.marples.namesource.android.com
Apr 11, 2016The decode_search function in dhcp.c in dhcpcd 3.x does not properly free allocated memory, which allows remote DHCP servers to cause a denial of service via a CVE-2012-6700 · Other software · Debian · reported by MITREHigh 7.5
The decode_search function in dhcp.c in dhcpcd 3.x does not properly free allocated memory, which allows remote DHCP servers to cause a denial of service via a crafted response.
- Product
- Debian Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddebian.orgopenwall.com
Apr 11, 2016The decode_search function in dhcp.c in dhcpcd 3.x allows remote DHCP servers to cause a denial of service (out-of-bounds read) via a crafted response.CVE-2012-6699 · Other software · Debian · reported by MITREHigh 7.5
The decode_search function in dhcp.c in dhcpcd 3.x allows remote DHCP servers to cause a denial of service (out-of-bounds read) via a crafted response.
- Product
- Debian Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddebian.orgopenwall.com
Apr 11, 2016The decode_search function in dhcp.c in dhcpcd 3.x allows remote DHCP servers to cause a denial of service (out-of-bounds write) via a crafted response.CVE-2012-6698 · Other software · Debian · reported by MITREHigh 7.5
The decode_search function in dhcp.c in dhcpcd 3.x allows remote DHCP servers to cause a denial of service (out-of-bounds write) via a crafted response.
- Product
- Debian Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddebian.orgopenwall.com
Jul 29, 2015The print_option function in dhcp-common.c in dhcpcd through 6.9.1, as used in dhcp.c in dhcpcd 5.x in Android before 5.1 and other products, misinterprets the CVE-2014-7913 · Other software · Dhcpcd Project · reported by chrome-cve-admin@google.comMedium 6.8
The print_option function in dhcp-common.c in dhcpcd through 6.9.1, as used in dhcp.c in dhcpcd 5.x in Android before 5.1 and other products, misinterprets the return value of the snprintf function, which allows remote DHCP servers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted message.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecuritytracker.comandroid.googlesource.com
Jul 29, 2015The get_option function in dhcp.c in dhcpcd before 6.2.0, as used in dhcpcd 5.x in Android before 5.1 and other products, does not validate the relationship betCVE-2014-7912 · Other software · Dhcpcd Project · reported by chrome-cve-admin@google.comMedium 6.8
The get_option function in dhcp.c in dhcpcd before 6.2.0, as used in dhcpcd 5.x in Android before 5.1 and other products, does not validate the relationship between length fields and the amount of data, which allows remote DHCP servers to execute arbitrary code or cause a denial of service (memory corruption) via a large length value of an option in a DHCPACK message.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecuritytracker.comzerodayinitiative.com
Sep 4, 2014The get_option function in dhcpcd 4.0.0 through 6.x before 6.4.3 allows remote DHCP servers to cause a denial of service by resetting the DHO_OPTIONSOVERLOADED CVE-2014-6060 · Other software · Dhcpcd Project · reported by MITRELow 3.3
The get_option function in dhcpcd 4.0.0 through 6.x before 6.4.3 allows remote DHCP servers to cause a denial of service by resetting the DHO_OPTIONSOVERLOADED option in the (1) bootfile or (2) servername section, which triggers the option to be processed again.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordadvisories.mageia.orgroy.marples.name
Jul 25, 2012Stack-based buffer overflow in the get_packet method in socket.c in dhcpcd 3.2.3 allows remote attackers to cause a denial of service (crash) and possibly execuCVE-2012-2152 · Other software · ROY Marples · reported by Red HatHigh 7.5
Stack-based buffer overflow in the get_packet method in socket.c in dhcpcd 3.2.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long packet.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddebian.orgopenwall.com
Apr 13, 2011dhcpcd before 5.2.12 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message.CVE-2011-0996 · Other software · ROY Marples · reported by MITREMedium 6.8
dhcpcd before 5.2.12 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordroy.marples.nameroy.marples.name
Jul 11, 2005The dhcpcd DHCP client before 1.3.22 allows remote attackers to cause a denial of service (daemon crash) via unknown vectors that cause an out-of-bounds memory CVE-2005-1848 · Other software · Phystech · reported by security@debian.orgMedium 5
The dhcpcd DHCP client before 1.3.22 allows remote attackers to cause a denial of service (daemon crash) via unknown vectors that cause an out-of-bounds memory read.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 17, 2003dhcpcd DHCP client daemon 1.3.22 and earlier allows local users to execute arbitrary code via shell metacharacters that are fed from a dhcpd .info script into aCVE-2002-1403 · Other software · Phystech · reported by MITREHigh 7.2
dhcpcd DHCP client daemon 1.3.22 and earlier allows local users to execute arbitrary code via shell metacharacters that are fed from a dhcpd .info script into a .exe script.
- Product
- Dhcpcd
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddistro.conectiva.com.brmarc.info
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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