WatchGuard Fireware OS up to 11.12.4+541730/12.5.13/12.11.4/2025.1.2 IPSec out-of-bounds write

Summaryinfo

A vulnerability, which was classified as critical, has been found in WatchGuard Fireware OS up to 11.12.4+541730/12.5.13/12.11.4/2025.1.2. Affected by this vulnerability is an unknown functionality of the component IPSec Handler. The manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2025-12195. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in WatchGuard Fireware OS up to 11.12.4+541730/12.5.13/12.11.4/2025.1.2. This issue affects an unknown functionality of the component IPSec Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via specially crafted IPSec configuration CLI commands.This vulnerability affects Fireware OS 11.0 up to and including 11.12.4+541730, 12.0 up to and including 12.11.4, 12.5 up to and including 12.5.13, and 2025.1 up to and including 2025.1.2.

The weakness was presented by Cody Sixteen as wgsa-2025-00019. The advisory is shared at watchguard.com. The identification of this vulnerability is CVE-2025-12195 since 10/24/2025. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/11/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-201306). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• WatchGuard

Name

• Fireware OS

Version

• 11.12.4+541730
• 12.5.0
• 12.5.1
• 12.5.2
• 12.5.3
• 12.5.4
• 12.5.5
• 12.5.6
• 12.5.7
• 12.5.8
• 12.5.9
• 12.5.10
• 12.5.11
• 12.5.12
• 12.5.13
• 12.11.0
• 12.11.1
• 12.11.2
• 12.11.3
• 12.11.4
• 2025.1.0
• 2025.1.1
• 2025.1.2

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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