What is GHSA-426c-439h-xj38?

GHSA-426c-439h-xj38 is a security advisory published by GitHub Security Advisories with Medium severity. An integer underflow exists in the DNS proxy component of the macOS NetworkExtension system...

Which CVE IDs does GHSA-426c-439h-xj38 cover?

GHSA-426c-439h-xj38 covers the following CVE IDs: CVE-2026-50216. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-426c-439h-xj38?

GHSA-426c-439h-xj38 has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-426c-439h-xj38MediumCVSS 5.3

An integer underflow exists in the DNS proxy component of the macOS NetworkExtension system...

Vendor

GitHub Security Advisories

Published

October 14, 2026

Last Modified

October 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-50216 →

📋 Description

An integer underflow exists in the DNS proxy component of the macOS NetworkExtension system extension shipped with Akamai Guardicore Platform Agent (GPA) for macOS, whereby if a UDP datagram shorter than 96 bytes that begins with a specific value is received, a subsequent size computation underflows to a near-SIZE_MAX value, causing an allocation failure and uncaught Objective-C exception that aborts the root system extension.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-50216
https://techdocs.akamai.com/guardicore-platform-agent/changelog
https://www.akamai.com/newsroom/security-advisories/guardicore-platform-agent-7-4
https://github.com/advisories/GHSA-426c-439h-xj38