CVE-2026-13728

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 57/100
Published: 2026-07-03 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

In exception circumstances, WatchGuard Fireware OS on a FireCluster may use a hard-coded encryption key to encrypt saved credentials for Access Portal resources. This vulnerability does not affect devices that do not support the Access Portal feature or standalone Fireboxes not deployed in a FireCluster.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
watchguard fireware 12.1 – 12.12.1
watchguard fireware 2025.1 – 2026.2.1

Bug Bounty Relevance

57 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/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

0.23%
Raw Score 0.002300
Percentile 13.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00230
2026-10-28
0.00230

Intelligence Sources

nvd ref →