CVEvulnerability

CVE-2025-9242

9.3 CRITICAL Known exploited Published 2025-09-17 Modified 2026-08-10 Official page ↗

CISA Known Exploited Vulnerability

WatchGuard Firebox Out-of-Bounds Write Vulnerability — WatchGuard Firebox

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.

Added to KEV
2025-11-12
Remediation due
2025-12-03
Ransomware use
Unknown
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015 ; https://nvd.nist.gov/vuln/detail/CVE-2025-9242
Status
Analyzed
Published
2025-09-17
Last modified
2026-08-10
Assigner
5d1c2695-1a31-4499-88ae-e847036fd7e3
CVSS 4.0 (5d1c2695-1a31-4499-88ae-e847036fd7e3)
9.3 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:N/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
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-787

Description

An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.

Affected configurations

• watchguard fireware (>= 11.10.2 < 12.11.4) • watchguard fireware (>= 11.10.2 < 12.5.13) • watchguard fireware 2025.1

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References