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4 vulnerabilities found for libX11 by x.org
CVE-2026-94285 (GCVE-0-2026-94285)
Vulnerability from cvelistv5 – Published: 2026-09-28 08:45 – Updated: 2026-09-30 12:55
VLAI
EPSS
VEX
Title
Out-of-bounds read in libX11's byte-oriented codeset parser
Summary
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.
Severity
5.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 12:52 UTC
CWE
- CWE-125 - Out-of-bounds read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://gitlab.freedesktop.org/xorg/lib/libx11/-/… | patch |
Impacted products
Date Public
2026-09-28 08:43
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CVE-2026-94284 (GCVE-0-2026-94284)
Vulnerability from cvelistv5 – Published: 2026-09-28 08:42 – Updated: 2026-09-30 12:48
VLAI
EPSS
VEX
Title
Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 12:46 UTC
CWE
- CWE-125 - Out-of-bounds read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://gitlab.freedesktop.org/xorg/lib/libx11/-/… | patch |
Impacted products
Date Public
2026-09-28 08:34
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CVE-2026-94283 (GCVE-0-2026-94283)
Vulnerability from cvelistv5 – Published: 2026-09-28 08:34 – Updated: 2026-09-30 12:44
VLAI
EPSS
VEX
Title
Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser
Summary
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 12:43 UTC
CWE
- CWE-125 - Out-of-bounds read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://gitlab.freedesktop.org/xorg/lib/libx11/-/… | patch |
Impacted products
Date Public
2026-09-28 08:31
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CVE-2026-88806 (GCVE-0-2026-88806)
Vulnerability from cvelistv5 – Published: 2026-09-21 13:42 – Updated: 2026-09-22 03:55
VLAI
EPSS
VEX
Title
libX11 XkbGetMap Reply Heap-based Buffer Overflow
Summary
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 00:00 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://gitlab.freedesktop.org/xorg/lib/libx11/-/… | patch |
Impacted products
Date Public
2026-09-18 13:33
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