What is GHSA-xq9j-wh63-h5qf?

GHSA-xq9j-wh63-h5qf is a security advisory published by GitHub Security Advisories with High severity. Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate...

Which CVE IDs does GHSA-xq9j-wh63-h5qf cover?

GHSA-xq9j-wh63-h5qf covers the following CVE IDs: CVE-2026-70286. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-xq9j-wh63-h5qf?

GHSA-xq9j-wh63-h5qf has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-xq9j-wh63-h5qfHighCVSS 7.8

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate...

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-70286 →

📋 Description

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-70286
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70286
https://github.com/advisories/GHSA-xq9j-wh63-h5qf