CVE-2026-50217 Use after free in Guardicore Platform Agent
A local attacker can cause a system crash via a crafted ICMPv6 packet in Akamai Guardicore Platform Agent when IPv6 redirect policies are enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-50217?
CVE-2026-50217 is a medium-severity use after free vulnerability in Akamai Guardicore Platform Agent, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-416
Which versions are affected by CVE-2026-50217?
How do I fix CVE-2026-50217?
No fix has been published for CVE-2026-50217 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-50217 being exploited?
There is no known exploitation of CVE-2026-50217 in the wild and no public exploit code.
Sources
Also known as GHSA-p8p9-vpf5-3ff3.