High 7.1Published Mar 30, 2026

CVE-2026-4315WatchGuard Firebox Cross-Site Request Forgery (CSRF) in Fireware Web UI

Updated under an hour ago (Oct 27, 2026, 10:23 PM ET)

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It affects WatchGuard Fireware OS and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for WatchGuard Fireware OS

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-352
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: WatchGuard
NVD analysis: Analyzed
Record last updated: Aug 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

WatchGuard Fireware OS watchguard:fireware_os (from the name)	from 2025.1 before 2026.2; from 12.0 before 12.12; from 11.8 through 11.12.4+541730	CNA record
watchguard fireware watchguard:fireware	from 2025.1 before 2026.2; from 12.5 before 12.5.18; from 11.8 before 11.12.4; 11.12.4; 11.12.4; from 12.0 before 12.12	NVD

References

References

https://psirt.watchguard.com/CVE-2026-4315	vendor-advisory, broken-link
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00006	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.