WatchGuard Firebox Out-of-Bounds Write Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL

9.8 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

68.97 %

Predictive Probability

Percentile Rank

98.6 th

Documented as more likely to be exploited than 98.6% of known CVEs.

Detection Date

Nov 12, 2025

Remediation Due

Dec 03, 2025

CISA Catalog Active

Threat Analysis

WatchGuard Firebox contains an out-of-bounds write vulnerability in the OS iked process that may allow a remote unauthenticated attacker to execute arbitrary code.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-9242