CVE-2026-27907: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 11 version 22H3
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves an integer underflow (wrap or wraparound) condition in the Windows Storage Spaces Controller on Windows 11 version 22H3 (build 10.0.22631.0). Exploitation requires local access with some level of authorization and can result in privilege escalation. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the system. The confidentiality, integrity, and availability of the affected system could be fully compromised as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27907 to remediate this vulnerability.
CVE-2026-27907: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 11 version 22H3
Description
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller 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 an integer underflow (wrap or wraparound) condition in the Windows Storage Spaces Controller on Windows 11 version 22H3 (build 10.0.22631.0). Exploitation requires local access with some level of authorization and can result in privilege escalation. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the system. The confidentiality, integrity, and availability of the affected system could be fully compromised as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27907 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.686Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27907","vendor":"Microsoft"}]
Threat ID: 69de7a1d82d89c981fd6a72e
Added to database: 04/14/2026, 17:32:13 UTC
Last enriched: 06/19/2026, 17:01:29 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 131
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