CVE-2025-9242 Details
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.
An out-of-bounds write vulnerability has been identified in WatchGuard Fireware OS, potentially allowing remote, unauthenticated attackers to execute arbitrary code. This issue affects Fireware OS versions 11.10.2 prior to 11.12.4_Update1, 12.0 prior to 12.11.3, and 2025.1. The vulnerability arises in the iked process and impacts both Mobile User VPN and Branch Office VPN when configured with a dynamic gateway peer. Notably, devices may remain vulnerable even after deleting these VPN configurations if a Branch Office VPN to a static gateway peer is still active.
Users can upgrade to Fireware OS 2025.1.1, 12.11.4, 12.5.13 (for T15 & T35 models), or 12.3.1_Update3 (for FIPS-certified releases). If an immediate upgrade is not possible, WatchGuard recommends following their guidelines for secure access to Branch Office VPNs that use IPSec and IKEv2 as a temporary workaround.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 11, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py | CISA-ADP | Exploit |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-9242 | CISA-ADP | US Government Resource |
| https://psirt.watchguard.com/CVE-2025-9242 | WatchGuard Technologies, Inc. | Broken Link |
| https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015 | WatchGuard Technologies, Inc. | Vendor Advisory |
This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.
| Vulnerability Name | Date Added | Due Date | Required Action |
|---|---|---|---|
| WatchGuard Firebox Out-of-Bounds Write Vulnerability | Nov 12, 2025 | 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. |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | WatchGuard Technologies, Inc. |
Affected Products
| Product | Versions |
|---|---|
| watchguard fireware | >= 11.10.2, < 12.11.4 >= 11.10.2, < 12.5.13 2025.1 |
CPE
Remediation
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| watchguard firebox m270 | All versions |
CPE
Remediation
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| watchguard firebox m290 | All versions |
CPE
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| watchguard firebox m370 | All versions |
CPE
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| watchguard firebox m390 | All versions |
CPE
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| watchguard firebox m440 | All versions |
CPE
Remediation
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| watchguard firebox m4600 | All versions |
CPE
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| watchguard firebox m470 | All versions |
CPE
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| watchguard firebox m4800 | All versions |
CPE
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| watchguard firebox m5600 | All versions |
CPE
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| watchguard firebox m570 | All versions |
CPE
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| watchguard firebox m5800 | All versions |
CPE
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| watchguard firebox m590 | All versions |
CPE
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| watchguard firebox m670 | All versions |
CPE
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| watchguard firebox m690 | All versions |
CPE
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| watchguard firebox nv5 | All versions |
CPE
Remediation
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| watchguard firebox t20 | All versions |
CPE
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| watchguard firebox t25 | All versions |
CPE
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| watchguard firebox t40 | All versions |
CPE
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| watchguard firebox t45 | All versions |
CPE
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| watchguard firebox t55 | All versions |
CPE
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| watchguard firebox t70 | All versions |
CPE
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| watchguard firebox t80 | All versions |
CPE
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| watchguard firebox t85 | All versions |
CPE
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| watchguard fireboxcloud | All versions |
CPE
Remediation
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| watchguard fireboxv | All versions |
CPE
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| watchguard firebox t15 | All versions |
CPE
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| watchguard firebox t35 | All versions |
CPE
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| watchguard firebox m295 | All versions |
CPE
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| watchguard firebox m395 | All versions |
CPE
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| watchguard firebox m495 | All versions |
CPE
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| watchguard firebox m595 | All versions |
CPE
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| watchguard firebox m695 | All versions |
CPE
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| watchguard firebox t115-w | All versions |
CPE
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| watchguard firebox t125 | All versions |
CPE
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| watchguard firebox t125-w | All versions |
CPE
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| watchguard firebox t145 | All versions |
CPE
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| watchguard firebox t145-w | All versions |
CPE
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| watchguard firebox t185 | All versions |
CPE
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Change History
9 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 10, 2026 | Modified Analysis | [email protected] |
| Aug 10, 2026 | CVE Modified | WatchGuard Technologies, Inc. |
| Jun 17, 2026 | CVE Modified | WatchGuard Technologies, Inc. |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 14, 2025 | CVE CISA KEV Update | Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government |
| Nov 13, 2025 | Initial Analysis | [email protected] |
| Nov 12, 2025 | CVE Modified | CISA-ADP |
| Oct 16, 2025 | CVE Modified | CISA-ADP |
| Sep 17, 2025 | New CVE Received | WatchGuard Technologies, Inc. |