CVE-2026-13046High· 7.2▾ TwilightA 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.6 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
7.5 → 7.2
0.3% → 0.4%
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.
fireware >= 12.0, < 12.11.10fireware >= 12.12, < 12.12.3fireware >= 2025.0, < 2026.2.3fireware >= 2026.3, < 2026.3.2Upgrade past the affected range:
fireware 2026.3.2Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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