What is CVE-2026-13722?

CVE-2026-13722 is a high-severity vulnerability in Watchguard Firebox Cloud, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.2/10. Published 2026-07-03.

How severe is CVE-2026-13722?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Watchguard Firebox Cloud

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 vulnerability to install a tampered firmware image.

Published 2026-07-03 · last modified 2026-08-28.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.1th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory, Vendor Advisory)
5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory, Broken Link)

Frequently asked questions

What is CVE-2026-13722?: CVE-2026-13722 is a high-severity vulnerability in Watchguard Firebox Cloud, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.2/10. Published 2026-07-03.
How severe is CVE-2026-13722?: High severity. CVSS v3 base score is 7.2 out of 10.