CVE-2026-50658: CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition in Microsoft Microsoft Defender for Endpoint for Mac
CVE-2026-50658 is a time-of-check time-of-use (TOCTOU) race condition vulnerability in Microsoft Defender for Endpoint for Mac. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity rating and a CVSS score of 7. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability involves a TOCTOU race condition in Microsoft Defender for Endpoint for Mac version 101.0.0. The race condition can be exploited by an authorized local attacker to gain elevated privileges on the affected system. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update for CVE-2026-50658 as soon as possible to remediate this vulnerability.
CVE-2026-50658: CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition in Microsoft Microsoft Defender for Endpoint for Mac
Description
CVE-2026-50658 is a time-of-check time-of-use (TOCTOU) race condition vulnerability in Microsoft Defender for Endpoint for Mac. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity rating and a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
Affected software
pkg:github/microsoft/defender-for-endpoint-for-macRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a TOCTOU race condition in Microsoft Defender for Endpoint for Mac version 101.0.0. The race condition can be exploited by an authorized local attacker to gain elevated privileges on the affected system. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges, potentially gaining higher access rights than intended. This can lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update for CVE-2026-50658 as soon as possible to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.831Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50658","vendor":"Microsoft"}]
Threat ID: 6a5676a968715ace43f096dd
Added to database: 07/14/2026, 17:49:29 UTC
Last enriched: 07/14/2026, 22:48:59 UTC
Last updated: 07/15/2026, 03:07:38 UTC
Views: 2
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