CVE-2026-13371CWE-502insecure-deserialization

CVE-2026-13371

Medium · published July 3, 2026

CVSS v3.1
4.9
EPSS
1%
Percentile
47.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00588 · 47.4th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-07-03T04:16Z
Affected products (3)
ProductVersionsFixed in
watchguard/fireware≥ 2025.1, < 2026.2.12026.2.1
watchguard/fireware≥ 12.5, < 12.5.1912.5.19
watchguard/fireware≥ 12.0, < 12.12.112.12.1
References (2)
https://psirt.watchguard.com/CVE-2026-13371 · 5d1c2695-1a31-4499-88ae-e847036fd7e3https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00014 · 5d1c2695-1a31-4499-88ae-e847036fd7e3
EPSS history
Timeline
  • 02 JUL 23:04Z
    WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
    cvelistv5