CVE-2026-13371

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 59/100
Published: 2026-07-03 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
watchguard fireware 2025.1 – 2026.2.1

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.59%
Raw Score 0.005880
Percentile 48.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00588
2026-10-28
0.00588

Intelligence Sources

nvd ref →