What is GHSA-xxw2-8m5q-m3r2?

GHSA-xxw2-8m5q-m3r2 is a security advisory published by GitHub Security Advisories with High severity. Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an...

Which CVE IDs does GHSA-xxw2-8m5q-m3r2 cover?

GHSA-xxw2-8m5q-m3r2 covers the following CVE IDs: CVE-2026-83586. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-xxw2-8m5q-m3r2?

GHSA-xxw2-8m5q-m3r2 has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-xxw2-8m5q-m3r2HighCVSS 7.8

Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an...

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-83586 →

📋 Description

Weak authentication in Windows Resilient File System (ReFS) Deduplication Service allows an authorized attacker to elevate privileges locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-83586
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83586
https://github.com/advisories/GHSA-xxw2-8m5q-m3r2