CVE-2025-12026
WatchGuard Firebox Authenticated Out of Bounds Write in certd
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS’s certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.This vulnerability affects Fireware OS 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.
INFO
Published Date :
Dec. 4, 2025, 10:15 p.m.
Last Modified :
Dec. 10, 2025, 3:41 p.m.
Remotely Exploit :
Yes !
Source :
5d1c2695-1a31-4499-88ae-e847036fd7e3
Affected Products
The following products are affected by CVE-2025-12026
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | ||||
| CVSS 4.0 | HIGH | 5d1c2695-1a31-4499-88ae-e847036fd7e3 |
Solution
- Update Fireware OS to a patched version.
- Apply WatchGuard security advisories.
- Restrict privileged user access.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-12026.
| URL | Resource |
|---|---|
| https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00017 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-12026 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-12026
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-12026 vulnerability anywhere in the article.
-
CybersecurityNews
Critical WatchGuard Firebox Vulnerabilities Let Attackers Bypass Integrity Checks and Inject Malicious Codes
Critical security alerts have been issued for Firebox firewall devices due to serious ten vulnerabilities. The vulnerabilities in WatchGuard, disclosed on December 4, 2025, span multiple severity leve ... Read more
-
Daily CyberSecurity
High-Severity WatchGuard Flaws Risk VPN DoS and RCE via IKEv2 Memory Corruption
WatchGuard Technologies has released a critical series of security advisories addressing five high-severity vulnerabilities across its Firebox product line. The flaws, which affect the Fireware OS, co ... Read more
The following table lists the changes that have been made to the
CVE-2025-12026 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 10, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 2025.1 up to (excluding) 2025.1.3 OR cpe:2.3:h:watchguard:firebox_t115-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t185:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 12.0.0 up to (excluding) 12.11.5 OR cpe:2.3:h:watchguard:firebox_t55:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t70:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t20:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t40:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t80:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m440:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m270:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m370:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m470:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m570:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m670:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m290:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m390:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m590:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m690:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4800:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5800:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxcloud:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxv:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4600:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5600:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_nv5:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t25:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t45:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t85:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* versions from (including) 12.5 up to (excluding) 12.5.14 OR cpe:2.3:h:watchguard:firebox_t15:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t35:-:*:*:*:*:*:*:* Added Reference Type WatchGuard Technologies, Inc.: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00017 Types: Vendor Advisory -
New CVE Received by 5d1c2695-1a31-4499-88ae-e847036fd7e3
Dec. 04, 2025
Action Type Old Value New Value Added Description An Out-of-bounds Write vulnerability in WatchGuard Fireware OS’s certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.This vulnerability affects Fireware OS 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/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 Added CWE CWE-787 Added Reference https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00017