CVE-2026-85892: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Microsoft Edge (Chromium-based)
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CWE-362) involves a race condition in Microsoft Edge (Chromium-based) where concurrent execution using shared resources is improperly synchronized. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. The vulnerability affects versions >=1.0.0.0 and <152.0.4191.66. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. The vulnerability impacts confidentiality, integrity, and availability of the affected system. 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 for Microsoft Edge (Chromium-based) to versions 152.0.4191.66 or later to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory for detailed update instructions.
CVE-2026-85892: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Microsoft Edge (Chromium-based)
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Microsoft Edge (Chromium-based)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-362) involves a race condition in Microsoft Edge (Chromium-based) where concurrent execution using shared resources is improperly synchronized. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. The vulnerability affects versions >=1.0.0.0 and <152.0.4191.66. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. The vulnerability impacts confidentiality, integrity, and availability of the affected system. 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 for Microsoft Edge (Chromium-based) to versions 152.0.4191.66 or later to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory for detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-04T18:18:19.328Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85892","vendor":"Microsoft"}]
Threat ID: 6aa8337755bf5e2cf564181c
Added to database: 09/14/2026, 17:48:39 UTC
Last enriched: 09/14/2026, 18:01:28 UTC
Last updated: 09/15/2026, 05:15:44 UTC
Views: 12
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