CVE-2026-50216 Integer overflow in Guardicore Platform Agent
An integer underflow in the Akamai Guardicore macOS agent's DNS proxy causes a crash when processing short UDP datagrams, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-50216?
CVE-2026-50216 is a medium-severity vulnerability in Akamai Guardicore Platform Agent, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-191
Which versions are affected by CVE-2026-50216?
How do I fix CVE-2026-50216?
No fix has been published for CVE-2026-50216 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-50216 being exploited?
There is no known exploitation of CVE-2026-50216 in the wild and no public exploit code.
Sources
Also known as GHSA-426c-439h-xj38.