CVE-2025-9242
CRITICAL CISA KEV EPSS 99.7%
Published Sep 17, 20259mo ago · Modified Jun 17, 20261w ago
9.3 CVSS 4.0
Published Sep 17, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
KEV Listed Nov 12, 2025 7mo ago
KEV Due Dec 3, 2025 209d overdue
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS 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.This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.3 and 2025.1.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
CISA Known Exploited Overdue 209d
- Added
- Nov 12, 2025
- Due
- Dec 3, 2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS Exploit Probability
99.7% percentile
Exploit & Patch Status
Actively Exploited (KEV)
No Patch Available
Weaknesses 1
CWE-787 Out-of-bounds Write Memory Safety
Affected Products 36
| Vendor | Product | Version | Range |
|---|---|---|---|
| watchguard | fireware | * | ≥11.10.2 – <12.11.4 |
| watchguard | firebox_m270 | * | any |
| watchguard | firebox_m290 | * | any |
| watchguard | firebox_m370 | * | any |
| watchguard | firebox_m390 | * | any |
| watchguard | firebox_m440 | * | any |
| watchguard | firebox_m4600 | * | any |
| watchguard | firebox_m470 | * | any |
| watchguard | firebox_m4800 | * | any |
| watchguard | firebox_m5600 | * | any |
| watchguard | firebox_m570 | * | any |
| watchguard | firebox_m5800 | * | any |
| watchguard | firebox_m590 | * | any |
| watchguard | firebox_m670 | * | any |
| watchguard | firebox_m690 | * | any |
| watchguard | firebox_nv5 | * | any |
| watchguard | firebox_t20 | * | any |
| watchguard | firebox_t25 | * | any |
| watchguard | firebox_t40 | * | any |
| watchguard | firebox_t45 | * | any |
| watchguard | firebox_t55 | * | any |
| watchguard | firebox_t70 | * | any |
| watchguard | firebox_t80 | * | any |
| watchguard | firebox_t85 | * | any |
| watchguard | fireboxcloud | * | any |
| watchguard | fireboxv | * | any |
| watchguard | fireware | * | ≥11.10.2 – <12.5.13 |
| watchguard | firebox_t15 | * | any |
| watchguard | firebox_t35 | * | any |
| watchguard | fireware | 2025.1 | any |
| watchguard | firebox_t115-w | * | any |
| watchguard | firebox_t125 | * | any |
| watchguard | firebox_t125-w | * | any |
| watchguard | firebox_t145 | * | any |
| watchguard | firebox_t145-w | * | any |
| watchguard | firebox_t185 | * | any |
References 3
- github.com https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-9242
- watchguard.com https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.