CVE-2026-81353: CWE-122: Heap-based Buffer Overflow in Microsoft HEIF Image Extension
Description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
HEIF Image Extension
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in the Microsoft Windows Codecs Library component used by the HEIF Image Extension. An attacker could exploit this flaw to execute arbitrary code locally. The affected versions are >=1.0.0.0 and <1.2.48.0. Microsoft has published an official security update to remediate this vulnerability.
Potential Impact
Successful exploitation allows unauthorized local code execution with high impact on confidentiality, integrity, and availability. This could lead to full system compromise on affected versions of the HEIF Image Extension.
Mitigation Recommendations
Apply the official security update provided by Microsoft for the HEIF Image Extension to versions 1.2.48.0 or later. This patch fully addresses the heap-based buffer overflow vulnerability. No additional mitigation steps are required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-26T18:40:19.856Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81353","vendor":"Microsoft"}]
Threat ID: 6aa0456aacd9273b49facdeb
Added to database: 09/08/2026, 17:27:06 UTC
Last enriched: 10/14/2026, 22:05:52 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 32
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