CVE-2026-57091: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Stack-based buffer overflow in Windows File History Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability is a stack-based buffer overflow (CWE-121) in the Windows File History Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access to escalate privileges, potentially gaining higher system rights. The vulnerability has been assigned CVE-2026-57091 and carries a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this stack-based buffer overflow to elevate privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to execute code with higher privileges, compromising system confidentiality, integrity, and availability.
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-2026-57091 to remediate this vulnerability.
CVE-2026-57091: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Stack-based buffer overflow in Windows File History Service 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 is a stack-based buffer overflow (CWE-121) in the Windows File History Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access to escalate privileges, potentially gaining higher system rights. The vulnerability has been assigned CVE-2026-57091 and carries a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this stack-based buffer overflow to elevate privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to execute code with higher privileges, compromising system confidentiality, integrity, and availability.
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-2026-57091 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-23T18:29:51.053Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57091","vendor":"Microsoft"}]
Threat ID: 6a5676bd68715ace43f0afda
Added to database: 07/14/2026, 17:49:49 UTC
Last enriched: 07/14/2026, 18:34:29 UTC
Last updated: 07/15/2026, 04:05:29 UTC
Views: 5
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