This page lists publicly disclosed CVE vulnerabilities affecting watchguard fireware (linked via NVD CPE). Each row includes severity scores, summaries, and publication dates to help identify and analyze security issues.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2026-13728 | In exception circumstances, WatchGuard Fireware OS on a FireCluster may use a hard-coded encryption key to encrypt saved credentials for Access Portal resources. This vulnerability affects Fireware OS 12.1 up to and including 12.12 and 2025.1 up to and including 2026.2. This vulnerability does not affect devices that do not support the Access Portal feature or standalone Fireboxes not deployed in a FireCluster. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 5.9 | 0.13% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13384 | An Out-of-bounds Write vulnerability in WatchGuard Fireware OS wgagent process could allow an authenticated privileged user to execute arbitrary code via a specially crafted requests to the Management Web UI.This vulnerability affects Fireware OS 12.1 up to and including 12.12 and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.6 | 0.47% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13383 | An Out-of-bounds Write vulnerability in WatchGuard Fireware OS ikestubd process could allow an authenticated privileged user to execute arbitrary code via a specially crafted requests to the Management Web UI.This vulnerability affects Fireware OS 12.1 up to and including 12.12 and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.6 | 0.47% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13377 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-6947. This issue affects Fireware OS 12.0 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.16% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13376 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS spamBlocker module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-1071. This issue affects Fireware OS 12.0 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.16% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13375 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Autotask Technology Integration module) allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-13938. This issue affects Fireware OS 12.4 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.16% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13374 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (ConnectWise Technology Integration module) allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-13937. This issue affects Fireware OS 12.4 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.16% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13373 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Tigerpaw Technology Integration module) allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-13936. This issue affects Fireware OS 12.4 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.16% | 2026-07-02 | 2026-07-09 |
| CVE-2026-13079 | A local privilege escalation vulnerability in the WatchGuard Mobile VPN with SSL client for Windows allows a local attacker to escalate their privileges to NT AUTHORITY\SYSTEM on the machine where the client is installed. This issue affects the Mobile VPN with SSL client for Windows up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 7.3 | 0.11% | 2026-07-02 | 2026-07-10 |
| CVE-2026-13054 | A path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.6 | 0.46% | 2026-07-02 | 2026-07-10 |
| CVE-2026-13053 | An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via a specially crafted CLI command. This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.6 | 0.47% | 2026-07-02 | 2026-07-10 |
| CVE-2026-3344 | A vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS filesystem integrity check and maintain limited persistence via a maliciously-crafted firmware update package.This issue affects Fireware OS 12.0 up to and including 12.11.7, 12.5.9 up to and including 12.5.16, and 2025.1 up to and including 2026.1.1. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 6.9 | 0.26% | 2026-03-03 | 2026-06-17 |
| CVE-2026-3343 | A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link. This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 5.1 | 0.20% | 2026-03-03 | 2026-06-17 |
| CVE-2026-3342 | An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface. This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.6 | 0.77% | 2026-03-03 | 2026-06-17 |
| CVE-2025-14733 KEV | 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 12.11.5 and 2025.1 up to and including 2025.1.3. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 9.3 | 18.35% | 2025-12-18 | 2026-06-17 |
| CVE-2025-6946 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS allows Stored XSS via the IPS module. This vulnerability requires an authenticated administrator session to a locally managed Firebox. This issue affects Firebox: from 12.0 through 12.11.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.15% | 2025-12-04 | 2026-06-17 |
| CVE-2025-1547 | A stack-based buffer overflow vulnerability [CWE-121] in WatchGuard Fireware OS's certificate request command could allow an authenticated privileged user to execute arbitrary code via specially crafted CLI commands.This issue affects Fireware OS: from 12.0 through 12.5.12+701324, from 12.6 through 12.11.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 7.5 | 0.24% | 2025-12-04 | 2026-06-17 |
| CVE-2025-1545 | An XPath Injection vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to retrieve sensitive information from the Firebox configuration through an exposed authentication or management web interface. This vulnerability only affects Firebox systems that have at least one authentication hotspot configured.This issue affects Fireware OS 11.11 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 in | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 8.2 | 0.40% | 2025-12-04 | 2026-06-17 |
| CVE-2025-13940 | An Expected Behavior Violation [CWE-440] vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS boot time system integrity check and prevent the Firebox from shutting down in the event of a system integrity check failure. The on-demand system integrity check in the Fireware Web UI will correctly show a failed system integrity check message in the event of a failure.This issue affects Fireware OS: from 12.8.1 through 12.11.4, from 2025.1 through 2025.1.2. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 6.7 | 0.10% | 2025-12-04 | 2026-06-17 |
| CVE-2025-13939 | Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS (Gateway Wireless Controller module) allows Stored XSS.This issue affects Fireware OS 11.7.2 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. | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | 4.8 | 0.15% | 2025-12-04 | 2026-06-17 |