CVE-2026-13722: WatchGuard Fireware OS contains a firmware validation bypass when processing a backup image via the backup/restore feature. An authenticated administrator can exploit this vulnerab

unknownCVE-2026-13722

WatchGuard Fireware OS contains a firmware validation bypass when processing a backup image via the backup/restore feature. An authenticated administrator can exploit this vulnerability to install a tampered firmware image.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 2025.6.2.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-07-03
Last updated: 2026-07-07
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-13722

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-137220.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-13722	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] WatchGuard Firebox: Multiple vulnerabilitiescert-bund

Recent advisories for WatchGuard Fireware OS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-8247: An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated att…nvd · 2026-07-03
mediumCVE-2026-13728: In exception circumstances, WatchGuard Fireware OS on a FireCluster may use a hard-coded encry…nvd · 2026-07-03
highCVE-2026-13384: An Out-of-bounds Write vulnerability in WatchGuard Fireware OS wgagent process could allow an …nvd · 2026-07-03
highCVE-2026-13383: An Out-of-bounds Write vulnerability in WatchGuard Fireware OS ikestubd process could allow an…nvd · 2026-07-03
mediumCVE-2026-13377: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd · 2026-07-03
mediumCVE-2026-13376: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vu…nvd · 2026-07-03