CVE-2026-54991: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
CVE-2026-54991 is a race condition vulnerability in the Windows USB Print Driver on Windows 11 Version 24H2. It allows an authorized local attacker to elevate privileges by exploiting improper synchronization during concurrent execution of shared resources. The vulnerability has a high severity rating and has an official patch available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54991) involves a race condition (CWE-362) in the Windows USB Print Driver component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The flaw arises from improper synchronization when multiple threads access shared resources concurrently, which can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix addressing this issue.
Potential Impact
An authorized local attacker can exploit this race condition vulnerability to elevate their privileges on the affected system, potentially gaining higher-level access and control. The impact affects confidentiality, integrity, and availability of the system as indicated by the CVSS vector. 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 in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54991 to remediate this vulnerability.
CVE-2026-54991: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
Description
CVE-2026-54991 is a race condition vulnerability in the Windows USB Print Driver on Windows 11 Version 24H2. It allows an authorized local attacker to elevate privileges by exploiting improper synchronization during concurrent execution of shared resources. The vulnerability has a high severity rating and has an official patch available from Microsoft.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-54991) involves a race condition (CWE-362) in the Windows USB Print Driver component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The flaw arises from improper synchronization when multiple threads access shared resources concurrently, which can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix addressing this issue.
Potential Impact
An authorized local attacker can exploit this race condition vulnerability to elevate their privileges on the affected system, potentially gaining higher-level access and control. The impact affects confidentiality, integrity, and availability of the system as indicated by the CVSS vector. 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 in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54991 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:10:05.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54991","vendor":"Microsoft"}]
Threat ID: 6a566f7e68715ace43e6bc19
Added to database: 07/14/2026, 17:18:54 UTC
Last enriched: 07/15/2026, 00:49:38 UTC
Last updated: 07/15/2026, 00:49:38 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.