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.
9 results
Jun 7, 2026Xcitium Client Security (XCS) before 13.8.2.10019 and Comodo Internet Security (CIS) through 12.3.4.8162 (fix expected by 2026 Q3) contain an integer underflow CVE-2026-49494 · Other software · Xcitium (formerly Comodo Security Solutions) · reported by VulnCheckHigh 8.7
Xcitium Client Security (XCS) before 13.8.2.10019 and Comodo Internet Security (CIS) through 12.3.4.8162 (fix expected by 2026 Q3) contain an integer underflow vulnerability in the firewall driver Inspect.sys that allows remote unauthenticated attackers to crash the system by sending a crafted IPv6 packet with a declared payload length smaller than the sum of its extension-header lengths. The unsigned 64-bit payload-length value underflows to a near-maximal integer, triggering an out-of-bounds read and oversized memcpy in the Windows kernel at DISPATCH_LEVEL, resulting in a blue screen of death even on hosts with all ports blocked.
- Product
- Comodo Internet Security
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commalwaretech.com
Aug 5, 2025Maxthon3 version 3.2.2 build 1000 and prior are vulnerable to cross context scripting (XCS) via the about:history page.CVE-2012-10032 · Other software · Maxthon International Ltd. · reported by VulnCheckHigh 8.7
Maxthon3 version 3.2.2 build 1000 and prior are vulnerable to cross context scripting (XCS) via the about:history page. The browser’s trusted zone improperly handles injected script content, allowing attackers to execute arbitrary JavaScript in a privileged context. This flaw enables modification of browser configuration and execution of arbitrary code through Maxthon’s exposed DOM APIs, including maxthon.program.Program.launch() and maxthon.io.writeDataURL(). Exploitation requires user interaction, typically by visiting a malicious webpage that triggers the injection.
- Product
- Maxthon3 Browser
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordblog.malerisch.netraw.githubusercontent.com
Apr 5, 2022Cross Site Scripting (XSS) vulnerability in xCss Valine v1.4.14 via the nick parameter to /classes/Comment.CVE-2020-28847 · Other software · Valine.js · reported by MITREMedium 5.4
Cross Site Scripting (XSS) vulnerability in xCss Valine v1.4.14 via the nick parameter to /classes/Comment.
- Product
- Valine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 8, 2015Watchguard XCS 9.2 and 10.0 before build 150522 allow remote authenticated users to execute arbitrary commands via shell metacharacters in the id parameter to ACVE-2015-5453 · Network & remote access · Watchguard · reported by MITREMedium 6.5
Watchguard XCS 9.2 and 10.0 before build 150522 allow remote authenticated users to execute arbitrary commands via shell metacharacters in the id parameter to ADMIN/mailqueue.spl.
- Product
- XCS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.compacketstormsecurity.com
Jul 8, 2015SQL injection vulnerability in Watchguard XCS 9.2 and 10.0 before build 150522 allows remote attackers to execute arbitrary SQL commands via the sid cookie, as CVE-2015-5452 · Network & remote access · Watchguard · reported by MITREHigh 7.5
SQL injection vulnerability in Watchguard XCS 9.2 and 10.0 before build 150522 allows remote attackers to execute arbitrary SQL commands via the sid cookie, as demonstrated by a request to borderpost/imp/compose.php3.
- Product
- XCS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.compacketstormsecurity.com
May 23, 2011The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands CVE-2011-2165 · Network & remote access · Watchguard · reported by MITREMedium 6.8
The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
- Product
- XCS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecunia.comkb.cert.org
Sep 17, 2007The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which aCVE-2007-3731 · Computers, phones & browsers · Linux · reported by Red HatMedium 4.9
The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function.
- Product
- Linux Kernel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.kernel.orggit.kernel.org
Jun 16, 2003The mxcsr code in Linux kernel 2.4 allows attackers to modify CPU state registers via a malformed address.CVE-2003-0248 · Other software · Redhat · reported by MITREHigh 10
The mxcsr code in Linux kernel 2.4 allows attackers to modify CPU state registers via a malformed address.
- Product
- Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 12, 2001The "mxcsr P4" vulnerability in the Linux kernel before 2.2.17-14, when running on certain Intel CPUs, allows local users to cause a denial of service (system hCVE-2001-1273 · Computers, phones & browsers · Linux · reported by MITRELow 2.1
The "mxcsr P4" vulnerability in the Linux kernel before 2.2.17-14, when running on certain Intel CPUs, allows local users to cause a denial of service (system halt).
- Product
- Linux Kernel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordciac.llnl.govredhat.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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