What is GHSA-687p-c9rf-f438?

GHSA-687p-c9rf-f438 is a security advisory published by GitHub Security Advisories with High severity. Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized...

Which CVE IDs does GHSA-687p-c9rf-f438 cover?

GHSA-687p-c9rf-f438 covers the following CVE IDs: CVE-2026-83728. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-687p-c9rf-f438?

GHSA-687p-c9rf-f438 has a CVSS v3 base score of 8.8, published by GitHub Security Advisories.

GHSA-687p-c9rf-f438HighCVSS 8.8

Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized...

Vendor

GitHub Security Advisories

Published

October 13, 2026

Last Modified

October 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-83728 →

📋 Description

Improper validation of syntactic correctness of input in Windows Hyper-V allows an authorized attacker to perform spoofing locally.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-83728
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83728
https://github.com/advisories/GHSA-687p-c9rf-f438