What is GHSA-3r8r-9cjm-whj4?

GHSA-3r8r-9cjm-whj4 is a security advisory published by GitHub Security Advisories with Critical severity. Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Which CVE IDs does GHSA-3r8r-9cjm-whj4 cover?

GHSA-3r8r-9cjm-whj4 covers the following CVE IDs: CVE-2026-45657. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-3r8r-9cjm-whj4?

GHSA-3r8r-9cjm-whj4 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-3r8r-9cjm-whj4CriticalCVSS 9.8

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Vendor

GitHub Security Advisories

Published

June 9, 2026

Last Modified

June 9, 2026

🔗 CVE IDs covered (1)

CVE-2026-45657 →

📋 Description

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-45657
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45657
https://github.com/advisories/GHSA-3r8r-9cjm-whj4