CVE-2026-13371

published 2026-07-03

CVE-2026-13371: 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…

Priority P4 25 medium 4.9 CVSS 3.1

AV N AC L PR H UI N S U C N I N A H

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.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
watchguard	fireware	>= 12.0 < 12.12.1	12.12.1
watchguard	fireware	>= 12.5 < 12.5.19	12.5.19
watchguard	fireware	>= 2025.1 < 2026.2.1	2026.2.1
watchguard	fireware_os	>= 12.0 < 12.12.1	12.12.1
watchguard	fireware_os	>= 12.0 < 12.11.9	12.11.9
watchguard	fireware_os	>= 12.0 < 12.5.19	12.5.19
watchguard	fireware_os	>= 2025.1 < 2026.2.1	2026.2.1

CVSS provenance

nvd v3.1 4.9 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 6.9 MEDIUM 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/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:X/V:X/RE:X/U:X

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CWE-502