CVE-2026-13046
highA deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already o…
Vendor / product: Watchguard — fireware
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.
CVSS
7.2
7.2 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-09-30 00:16
Modified: 2026-10-08 20:01
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
watchguard / fireware ≥12.0 <12.11.10, ≥12.12 <12.12.3, ≥2025.0 <2026.2.3, ≥2026.3 <2026.3.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://psirt.watchguard.com/CVE-2026-13046
Patch / mitigation: https://psirt.watchguard.com/CVE-2026-13046
References
- https://psirt.watchguard.com/CVE-2026-13046 5d1c2695-1a31-4499-88ae-e847036fd7e3
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗