CVE-2026-13046

Summary

A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already obtained the ability to write files on the appliance to execute arbitrary code in the context of the samld service by causing samld to load a maliciously crafted session file.

Affected Software

VendorProductVersion RangeStatus
WatchGuardFireware OS2026.3 < 2026.3.2affected
WatchGuardFireware OS2025.0 < 2026.2.3affected
WatchGuardFireware OS12.0 < 12.12.3affected
WatchGuardFireware OS12.11 < 12.11.10affected

Weaknesses

  • CWE-502: CWE-502

References