What is GHSA-9h8r-5357-qf7r?

GHSA-9h8r-5357-qf7r is a security advisory published by GitHub Security Advisories with High severity. Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Which CVE IDs does GHSA-9h8r-5357-qf7r cover?

GHSA-9h8r-5357-qf7r covers the following CVE IDs: CVE-2026-70023. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9h8r-5357-qf7r?

GHSA-9h8r-5357-qf7r has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-9h8r-5357-qf7rHighCVSS 7.8

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-70023 →

📋 Description

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-70023
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70023
https://github.com/advisories/GHSA-9h8r-5357-qf7r