Dashboard / CVE-2026-93857

CVE-2026-93857

CRITICAL
INFO Priority: 0.04 BB Relevance: 78/100
Published: 2026-10-27 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.

Weakness Classification (3)

Affected Software (9)

VendorProductVersion
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22

References & Advisories (1)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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

0.47%
Raw Score 0.004710
Percentile 40.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00471
2026-10-28
0.00471

Intelligence Sources

mitre ref →
nvd ref →

External Links