CVE-2026-83952: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows Resilient File System (ReFS) in Windows 11 Version 24H2 (build 10.0.26100.0). An authorized local attacker can exploit this flaw to elevate their privileges, potentially gaining higher-level access to the system. The vulnerability is tracked as CWE-122. Microsoft has published an official security update to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, which can lead to complete system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83952 to remediate this vulnerability.
CVE-2026-83952: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 11 Version 24H2
Description
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the Windows Resilient File System (ReFS) in Windows 11 Version 24H2 (build 10.0.26100.0). An authorized local attacker can exploit this flaw to elevate their privileges, potentially gaining higher-level access to the system. The vulnerability is tracked as CWE-122. Microsoft has published an official security update to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, which can lead to complete system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83952 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-31T23:40:59.641Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83952","vendor":"Microsoft"}]
Threat ID: 6aa04575acd9273b49fbbc0e
Added to database: 09/08/2026, 17:27:17 UTC
Last enriched: 09/08/2026, 17:55:02 UTC
Last updated: 09/08/2026, 18:54:25 UTC
Views: 2
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