CVE-2026-13371

Medium

Open

TLP:CLEAR

WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization

NVD CVE.org

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Description

An authenticated administrator can trigger a denial-of-service condition in the Fireware Management Web UI by sending malformed or crafted data to the put_data endpoint, which performs unsafe deserialization of the attacker-supplied input.

Details

CVSS Score: 6.9
EPSS Score ⓘ: 0.33%

25.7th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Confidence: 90%
Published: Jul 2, 2026
Last Modified: Aug 10, 2026

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