CVE-2026-13086 Fireware OS Stack-Based Buffer Overflow in Mobile Security epm Endpoint
Unauthenticated remote attackers can execute arbitrary code via a stack-based buffer overflow in the deprecated Mobile Security epm 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-2026-13086?
CVE-2026-13086 is a critical memory corruption vulnerability in WatchGuard Fireware OS, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS allows an unauthenticated remote attacker to execute arbitrary code.
Which versions are affected by CVE-2026-13086?
How do I fix CVE-2026-13086?
No fix has been published for CVE-2026-13086 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-13086 being exploited?
There is no known exploitation of CVE-2026-13086 in the wild and no public exploit code.
Sources
Also known as GHSA-c7m7-329m-9vph.