CVE-2026-13086

9.3 CRITICAL 0.7% exploit odds No fix listed Memory safety

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.7% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-08-28 02:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-03 21:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-28 02:16 UTC
Last modified: 2026-09-03 21:17 UTC
Exploit probability: 0.7% · EPSS, next 30 days
Weakness: CWE-121
Record status: Deferred

Attack profile CVSS 4.0 · 9.3

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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References

https://psirt.watchguard.com/CVE-2026-13086

NVD record · CVE.org record