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Vulnerability record · CVE-2026-13086 · published 28 August 2026

CVE-2026-13086: Stack-based buffer overflow vulnerability

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.

9.3 CVSS 4.0 Critical EPSS 0.44% · top 64.1% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write Deferred
9.3CVSS 4.0 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
3 Sep 2026Last modified by NVD

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.

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:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-13086), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.