PT-2026-29023 · Watchguard · Watchguard Fireware

Simone Paganessi · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-4315

Positive Technologies (AI Summary)

CVSS v4.0

7.1

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions WatchGuard Fireware OS versions 11.8 through 11.12.4+541730 WatchGuard Fireware OS versions 12.0 through 12.11.8 WatchGuard Fireware OS versions 2025.1 through 2026.1.2

Description A Cross-Site Request Forgery (CSRF) issue in the 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.

Recommendations WatchGuard Fireware OS versions 11.8 through 11.12.4+541730: At the moment, there is no information about a newer version that contains a fix for this vulnerability. WatchGuard Fireware OS versions 12.0 through 12.11.8: At the moment, there is no information about a newer version that contains a fix for this vulnerability. WatchGuard Fireware OS versions 2025.1 through 2026.1.2: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2026-4315

Affected Products

Watchguard Fireware

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-4315 · Security Note
• https://watchguard.com/wgrd-psirt/advisory/wgsa-2026-00006 · Vendor Advisory
• https://twitter.com/drak3hft7/status/2038555637823479841 · Twitter Post
• https://twitter.com/CVEnew/status/2038618068608278897 · Twitter Post