CVE-2026-94284: CWE-125 Out-of-bounds read in x.org libX11
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.
AI Analysis
Technical Summary
An out-of-bounds read vulnerability exists in the XIM trigger-key registration parser component of libX11 prior to version 1.8.14. This vulnerability (CWE-125) can be exploited by malicious X servers to trigger crashes in X clients that use libX11, potentially leading to denial of service conditions. The CVSS 3.1 base score is 5.5, reflecting local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no impact on confidentiality or integrity, and high impact on availability.
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing X clients connected to a malicious X server. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in libX11 version 1.8.14. Users and administrators should upgrade to version 1.8.14 or later to remediate this vulnerability. No other mitigation steps are indicated.
CVE-2026-94284: CWE-125 Out-of-bounds read in x.org libX11
Description
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.
CVSS v3.1
Score 5.5medium
Affected software
x.org
libX11
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An out-of-bounds read vulnerability exists in the XIM trigger-key registration parser component of libX11 prior to version 1.8.14. This vulnerability (CWE-125) can be exploited by malicious X servers to trigger crashes in X clients that use libX11, potentially leading to denial of service conditions. The CVSS 3.1 base score is 5.5, reflecting local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no impact on confidentiality or integrity, and high impact on availability.
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing X clients connected to a malicious X server. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in libX11 version 1.8.14. Users and administrators should upgrade to version 1.8.14 or later to remediate this vulnerability. No other mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-09-21T09:33:25.369Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aba2d57f7a7c5410670be83
Added to database: 09/28/2026, 09:03:19 UTC
Last enriched: 09/28/2026, 09:17:51 UTC
Last updated: 09/29/2026, 01:57:23 UTC
Views: 17
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