CVE-2026-93543: CWE-125 Out-of-bounds read in x.org libXi
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
AI Analysis
Technical Summary
An out-of-bounds read vulnerability exists in the XI2 class parser component of libXi versions prior to 1.8.4. A malicious X server could exploit this flaw to cause an attached X client to crash. The vulnerability is identified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 7.4, indicating high severity. The attack vector is network-based with low attack complexity, no privileges required, and requires user interaction. The impact is limited to availability, causing denial of service.
Potential Impact
Exploitation of this vulnerability allows a malicious X server to crash an attached X client, resulting in denial of service. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in libXi version 1.8.4. Users and administrators should upgrade to libXi 1.8.4 or later to remediate this vulnerability. No other mitigation guidance is provided.
CVE-2026-93543: CWE-125 Out-of-bounds read in x.org libXi
Description
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
CVSS v3.1
Score 7.4high
Affected software
x.org
libXi
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An out-of-bounds read vulnerability exists in the XI2 class parser component of libXi versions prior to 1.8.4. A malicious X server could exploit this flaw to cause an attached X client to crash. The vulnerability is identified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 7.4, indicating high severity. The attack vector is network-based with low attack complexity, no privileges required, and requires user interaction. The impact is limited to availability, causing denial of service.
Potential Impact
Exploitation of this vulnerability allows a malicious X server to crash an attached X client, resulting in denial of service. There is no impact on confidentiality or integrity.
Mitigation Recommendations
A fix is available in libXi version 1.8.4. Users and administrators should upgrade to libXi 1.8.4 or later to remediate this vulnerability. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-09-18T09:08:10.295Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab550d3f7a7c541068cffc4
Added to database: 09/24/2026, 16:33:23 UTC
Last enriched: 09/24/2026, 16:49:49 UTC
Last updated: 09/25/2026, 02:48:09 UTC
Views: 7
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