What’s Vulnerable › Products

x.org libX11 vulnerabilities

19 known vulnerabilities, 0 confirmed exploited in the wild (CISA KEV), 4 published in the last 12 months.

Check whether your x.org libX11 version is affected

Latest x.org libX11 vulnerabilities

• CVE-2026-94285 — Out-of-bounds read in libX11's byte-oriented codeset parser (CVSS 5.1)
• CVE-2026-94284 — Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser (CVSS 5.5)
• CVE-2026-94283 — Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser (CVSS 6.5)
• CVE-2026-88806 — libX11 XkbGetMap Reply Heap-based Buffer Overflow (CVSS 7.5)
• CVE-2023-43787 — Libx11: integer overflow in xcreateimage() leading to a heap overflow (CVSS 7.8)
• CVE-2023-43786 — Libx11: stack exhaustion from infinite recursion in putsubimage() (CVSS 5.5)
• CVE-2023-43785 — Libx11: out-of-bounds memory access in _xkbreadkeysyms() (CVSS 5.5)
• CVE-2023-3138 — (CVSS 7.5)
• CVE-2021-31535 — (CVSS 9.8)
• CVE-2020-14363 — (CVSS 7.8)
• CVE-2020-14344 — (CVSS 6.7)
• CVE-2018-14600 — (CVSS 9.8)
• CVE-2018-14599 — (CVSS 9.8)
• CVE-2018-14598 — (CVSS 7.5)
• CVE-2016-7943 — (CVSS 9.8)
• CVE-2016-7942 — (CVSS 9.8)
• CVE-2013-7439 — (CVSS 7.5)
• CVE-2007-1667 — (CVSS 9.3)
• CVE-2006-5397 — (CVSS 2.1)