What is GHSA-3m3v-r5qg-pfx9?

GHSA-3m3v-r5qg-pfx9 is a security advisory published by GitHub Security Advisories with High severity. Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute...

Which CVE IDs does GHSA-3m3v-r5qg-pfx9 cover?

GHSA-3m3v-r5qg-pfx9 covers the following CVE IDs: CVE-2026-123379. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-3m3v-r5qg-pfx9?

GHSA-3m3v-r5qg-pfx9 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-3m3v-r5qg-pfx9HighCVSS 7.5

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute...

Vendor

GitHub Security Advisories

Published

November 10, 2026

Last Modified

November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-123379 →

📋 Description

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-123379
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-123379
https://github.com/advisories/GHSA-3m3v-r5qg-pfx9