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 endpoint, which performs unsafe deserialization of the attacker-supplied input.

CVSS 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

4.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-25)

CWE

CWE-502

Published

2026-07-03

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• watchguard:fireware

References

• https://psirt.watchguard.com/CVE-2026-13371
• https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00014

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