libX11 vulnerabilities
5 known CVE vulnerabilities in libX11, translated and rated.
- CVE-2026-94285Medium
An out-of-bounds read in libX11's byte-oriented codeset parser before 1.8.14 could be used by malicious X servers to crash attached X clients.
- CVE-2026-94284Medium
An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser before 1.8.14 could be used by malicious X servers to crash attached X clients.
- CVE-2026-94283Medium
An out-of-bounds read vulnerability in libX11's XIM attribute parser before 1.8.14 could be used by malicious X servers to crash attached X clients.
- CVE-2026-88806High
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
- CVE-2023-3138High
A vulnerability was found in libX11 due to a lack of checks on values passed to functions in src/InitExt.c. These values are used as array indexes, which can lead to overwriting other parts of the Display structure, potentially causing the client to crash due to memory corruption.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS