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.
Advisories

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Fixes

Solution

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Workaround

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History

Wed, 14 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Title Integer Underflow in DNS Proxy Causes System Extension Crash on macOS

Wed, 14 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 14 Oct 2026 05:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-191
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-14T15:07:57.029Z

Reserved: 2026-06-04T00:00:00.000Z

Link: CVE-2026-50216

cve-icon Vulnrichment

Updated: 2026-10-14T15:07:53.314Z

cve-icon NVD

Status : Received

Published: 2026-10-14T06:17:06.597

Modified: 2026-10-14T16:17:45.810

Link: CVE-2026-50216

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T17:30:04Z

Weaknesses