What is GHSA-65j6-99mv-3xg6?

GHSA-65j6-99mv-3xg6 is a security advisory published by GitHub Security Advisories with High severity. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Which CVE IDs does GHSA-65j6-99mv-3xg6 cover?

GHSA-65j6-99mv-3xg6 covers the following CVE IDs: CVE-2026-55018. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-65j6-99mv-3xg6?

GHSA-65j6-99mv-3xg6 has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-65j6-99mv-3xg6HighCVSS 7.8

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Vendor

GitHub Security Advisories

Published

July 14, 2026

Last Modified

July 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-55018 →

📋 Description

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-55018
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55018
https://github.com/advisories/GHSA-65j6-99mv-3xg6