What is GHSA-72mw-639j-fvxf?

GHSA-72mw-639j-fvxf is a security advisory published by GitHub Security Advisories with High severity. Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized...

Which CVE IDs does GHSA-72mw-639j-fvxf cover?

GHSA-72mw-639j-fvxf covers the following CVE IDs: CVE-2026-83839. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-72mw-639j-fvxf?

GHSA-72mw-639j-fvxf has a CVSS v3 base score of 7.0, published by GitHub Security Advisories.

GHSA-72mw-639j-fvxfHighCVSS 7.0

Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized...

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-83839 →

📋 Description

Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-83839
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83839
https://github.com/advisories/GHSA-72mw-639j-fvxf