Dashboard / CVE-2026-103593

CVE-2026-103593

HIGH
MEDIUM Priority: 0.01 BB Relevance: 49/100
Published: 2026-10-27 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

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

Description

A stack-based buffer overflow vulnerability in the Fireware OS logging service allows a network-adjacent attacker who can impersonate or intercept traffic to the configured log server to execute arbitrary code with root privileges by presenting a specially crafted certificate.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
WatchGuard Fireware OS 2025.1 < 2026.4

References & Advisories (1)

Bug Bounty Relevance

49 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/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

0.10%
Raw Score 0.001000
Percentile 0.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00100
2026-10-28
0.00100

Intelligence Sources

mitre ref →
nvd ref →

External Links