---
id: CVE-2026-50217
title: >-
  A use-after-free vulnerability in the Windows WFP callout driver of Akamai
  Guardicore Platform Agent (GPA) allows a local low-privileged user to cause a
  denial of service (system crash / BSOD) via an outbound ICMPv6 packet
  containing an …
summary: >-
  A use-after-free vulnerability in the Windows WFP callout driver of Akamai
  Guardicore Platform Agent (GPA) allows a local low-privileged user to cause a
  denial of service (system crash / BSOD) via an outbound ICMPv6 packet
  containing an …
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-416
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T06:17:06.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50217'
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: '2026-10-14T07:21:04.830Z'
---

## Overview

A use-after-free vulnerability in the Windows WFP callout driver of Akamai Guardicore Platform Agent (GPA) allows a local low-privileged user to cause a denial of service (system crash / BSOD) via an outbound ICMPv6 packet containing an IPv6 Hop-by-Hop extension header. When the IPv6 ICMP redirect policy is active, the packet is copied into a buffer that is freed but subsequently passed to a downstream filter. The size of the freed allocation is attacker-controlled (via packet length), enabling kernel pool grooming. Exploitation requires that the non-default IPv6 ICMP capture/redirect policy is enabled for the endpoint.

## Remediation

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