CVE-2026-58616: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Microsoft Edge (Chromium-based)
Description
CVE-2026-58616 is a race condition vulnerability in the Copilot Chat feature of Microsoft Edge (Chromium-based). It allows an authorized attacker to disclose information over a network due to improper synchronization during concurrent execution using shared resources. The vulnerability has a medium severity rating with a CVSS score of 4.4. An official fix is available to address this issue.
CVSS v3.1
Score 4.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-58616, involves a race condition in the Copilot Chat feature of Microsoft Edge (Chromium-based). The flaw occurs because of improper synchronization when multiple processes access shared resources concurrently, which can lead to unauthorized information disclosure over a network. The issue has been assigned a medium severity with a CVSS v3.1 base score of 4.4. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
An authorized attacker could exploit this race condition to disclose sensitive information over a network. The impact is limited to information disclosure and does not affect system availability or integrity. The vulnerability requires low privileges and user interaction, and the attack complexity is high.
Mitigation Recommendations
An official fix is available from Microsoft to address this vulnerability. It is recommended to apply the provided patch to the affected Microsoft Edge (Chromium-based) version to remediate the issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-c7hh-86mm-w7m5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-58616"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- Remediation Level
- official-fix
- State
- PUBLISHED
Threat ID: 6a92f7f2acd9273b49e7e27f
Added to database: 08/29/2026, 15:17:06 UTC
Last enriched: 10/08/2026, 22:45:59 UTC
Last updated: 10/13/2026, 06:48:18 UTC
Views: 38
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