CVE-2026-4315: CWE-352 in WatchGuard Fireware OS
A Cross-Site Request Forgery (CSRF) vulnerability exists in the WatchGuard Fireware OS WebUI that could allow a remote attacker to cause a denial-of-service (DoS) condition by tricking an authenticated administrator into visiting a malicious web page. This vulnerability affects multiple versions of Fireware OS, specifically versions 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2. The issue does not impact confidentiality or integrity but can disrupt availability of the Web UI.
AI Analysis
Technical Summary
CVE-2026-4315 describes a CSRF vulnerability in the WatchGuard Fireware OS WebUI. An attacker can exploit this by convincing an authenticated administrator to visit a crafted malicious web page, which triggers a denial-of-service condition in the Web UI. The vulnerability affects Fireware OS versions 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2. The CVSS 3.1 base score is 6.5, reflecting a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in a denial-of-service condition on the Fireware Web UI, potentially disrupting administrative access and management of the device. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is available, administrators should avoid visiting untrusted web pages while authenticated to the Fireware Web UI to reduce the risk of CSRF exploitation.
CVE-2026-4315: CWE-352 in WatchGuard Fireware OS
Description
A Cross-Site Request Forgery (CSRF) vulnerability exists in the WatchGuard Fireware OS WebUI that could allow a remote attacker to cause a denial-of-service (DoS) condition by tricking an authenticated administrator into visiting a malicious web page. This vulnerability affects multiple versions of Fireware OS, specifically versions 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2. The issue does not impact confidentiality or integrity but can disrupt availability of the Web UI.
CVSS v4.0
Score 7.1high
Affected software
pkg:github/watchguard/fireware-osRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4315 describes a CSRF vulnerability in the WatchGuard Fireware OS WebUI. An attacker can exploit this by convincing an authenticated administrator to visit a crafted malicious web page, which triggers a denial-of-service condition in the Web UI. The vulnerability affects Fireware OS versions 11.8 through 11.12.4+541730, 12.0 through 12.11.8, and 2025.1 through 2026.1.2. The CVSS 3.1 base score is 6.5, reflecting a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in a denial-of-service condition on the Fireware Web UI, potentially disrupting administrative access and management of the device. There is no impact on confidentiality or integrity of data. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is available, administrators should avoid visiting untrusted web pages while authenticated to the Fireware Web UI to reduce the risk of CSRF exploitation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4qgx-7r85-6fpx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-4315"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a7f43ebbf8831d5395d6333
Added to database: 08/14/2026, 16:35:55 UTC
Last enriched: 08/14/2026, 16:43:08 UTC
Last updated: 08/16/2026, 00:41:14 UTC
Views: 3
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