X.org libX11 vulnerabilities
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Published CVEs affecting X.org libX11: 4 record(s), with affected versions and fixes.
CVE-2026-94285
Medium · 5.1
CWE-125 Sep 28, 2026
Out-of-bounds read in libX11's byte-oriented codeset parser
An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-94284
Medium · 5.5
CWE-125 Sep 28, 2026
Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser
An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-94283
Medium · 6.5
CWE-125 Sep 28, 2026
Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser
An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-88806
High · 7.5
CWE-122 Sep 21, 2026
libX11 XkbGetMap Reply Heap-based Buffer Overflow
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.