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CVE-2026-13086 is a stack-based buffer-overflow vulnerability in the Endpoint Protection Manager (epm) service associated with the deprecated Mobile Security feature in WatchGuard Fireware OS. The service processes remotely reachable input without adequate bounds checking, allowing an unauthenticated attacker to overwrite stack memory and execute arbitrary code. The epm service runs as root; reported build characteristics, including the absence of stack-canary protection and position-independent execution, may make reliable exploitation easier.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical stack-based buffer overflow in WatchGuard Fireware OS's deprecated Mobile Security epm endpoint service, with root execution context and weakened binary exploit mitigations.
An unauthenticated remote code execution vulnerability caused by a stack-based buffer overflow in the Endpoint Protection Manager (epm) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.