Description
In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
Published: 2026-09-05
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
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, 09 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 08 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Title libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate


Sat, 05 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Description In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
First Time appeared Xmlsoft
Xmlsoft libxml2
Weaknesses CWE-190
CPEs cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
Vendors & Products Xmlsoft
Xmlsoft libxml2
References
Metrics cvssV3_1

{'score': 6.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-08T18:04:58.145Z

Reserved: 2026-09-05T04:21:52.780Z

Link: CVE-2026-86138

cve-icon Vulnrichment

Updated: 2026-09-08T18:04:47.711Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-05T05:17:12.600

Modified: 2026-09-08T21:14:09.040

Link: CVE-2026-86138

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-05T04:21:53Z

Links: CVE-2026-86138 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-08T02:45:09Z

Weaknesses