CVE-2026-4315

MEDIUMCVSS 6.5/10EPSS 0.17%

Last modified

CVE-2026-4315 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
WatchguardFireware>= 2025.1, < 2026.2
WatchguardFireware>= 12.5, < 12.5.18
WatchguardFireware>= 11.8, < 11.12.4
WatchguardFireware11.12.4
WatchguardFireware>= 12.0, < 12.12

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-4315?
A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.
How severe is CVE-2026-4315?
CVE-2026-4315 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4315?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST