CVE-2026-13086: Fireware OS Stack-Based Buffer Overflow in Mobile Security epm Endpoint
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
WatchGuard Fireware OS (epm Endpoint Protection Manager)to a version that resolves this vulnerability.Fixed in 2026.3.1 - Upgrade
Upgrade
WatchGuard Fireware OS (epm Endpoint Protection Manager)to a version that resolves this vulnerability.Fixed in 2026.2.2 - Upgrade
Upgrade
WatchGuard Fireware OS (epm Endpoint Protection Manager)to a version that resolves this vulnerability.Fixed in 12.12.2 - Upgrade
Upgrade
WatchGuard Fireware OS (epm Endpoint Protection Manager)to a version that resolves this vulnerability.Fixed in 12.5.20
Event History
Frequently Asked Questions
What level of access does an attacker need?
The issue can be exploited by an unauthenticated remote attacker; no credentials are required.
Which component should be prioritized for investigation?
Prioritize systems using the epm (Endpoint Protection Manager) service associated with the deprecated Mobile Security feature in WatchGuard Fireware OS.