Description
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
Published: 2026-09-21
Score: 8.9 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 23 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H'}

threat_severity

Important


Mon, 21 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 21 Sep 2026 14:00:00 +0000

Type Values Removed Values Added
Description A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
Title libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow
First Time appeared X.org
X.org libxrender
Weaknesses CWE-122
CPEs cpe:2.3:a:x.org:libxrender:*:*:*:*:*:*:*:*
Vendors & Products X.org
X.org libxrender
References
Metrics cvssV4_0

{'score': 8.9, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


Subscriptions

X.org Libxrender
cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-09-22T03:55:46.845Z

Reserved: 2026-09-10T08:35:07.010Z

Link: CVE-2026-88807

cve-icon Vulnrichment

Updated: 2026-09-21T14:39:29.116Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-21T14:17:22.410

Modified: 2026-09-22T19:40:05.870

Link: CVE-2026-88807

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-21T13:49:21Z

Links: CVE-2026-88807 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T17:45:17Z

Weaknesses