---
id: CVE-2026-50216
title: >-
  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 speci…
summary: >-
  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 speci…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-191
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T06:17:06.597'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50216'
references:
  - url: 'https://techdocs.akamai.com/guardicore-platform-agent/changelog/'
    label: cve@mitre.org
  - url: >-
      https://www.akamai.com/newsroom/security-advisories/guardicore-platform-agent-7-4
    label: cve@mitre.org
tags:
  - nvd
ingestedAt: '2026-10-14T07:21:04.829Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.