What is GHSA-w558-29wr-g4fh?

GHSA-w558-29wr-g4fh is a security advisory published by GitHub Security Advisories with Medium severity. An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in...

Which CVE IDs does GHSA-w558-29wr-g4fh cover?

GHSA-w558-29wr-g4fh covers the following CVE IDs: CVE-2026-86981. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w558-29wr-g4fh?

GHSA-w558-29wr-g4fh has a CVSS v3 base score of 5.5, published by GitHub Security Advisories.

GHSA-w558-29wr-g4fhMediumCVSS 5.5

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in...

Vendor

GitHub Security Advisories

Published

October 20, 2026

Last Modified

October 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-86981 →

📋 Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-86981
https://support.apple.com/en-us/149042
https://support.apple.com/en-us/149043
https://github.com/advisories/GHSA-w558-29wr-g4fh