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October 15, 2026

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CVE-2026-13722NVD

Vulnerability Summary

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.
Severity Level
UNKNOWN
Published Date
Jul 2, 2026
Last Modified
Aug 27, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.33%Probability
Root Weakness (CWE)
CWE-347: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 8.6 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredHigh
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • WatchGuard Fireware OS >= 2025.1 and < 2026.2.1
  • WatchGuard Fireware OS >= 12.0 and < 12.12.1
  • WatchGuard Fireware OS >= 11.0 and <= 11.12.4+541730
  • WatchGuard Fireware OS >= 12.0 and < 12.11.9
  • WatchGuard Fireware OS >= 12.0 and < *
Patched Versions
  • WatchGuard Fireware OS 2026.2.1
  • WatchGuard Fireware OS 12.12.1
  • WatchGuard Fireware OS 11.12.4+541730
  • WatchGuard Fireware OS 12.11.9
  • WatchGuard Fireware OS *
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References