CVE-2026-8247
8.8 · HIGHOverview
CVE-2026-8247 is a high-severity vulnerability affecting watchguard fireware. It was published on July 3, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker on the same local network segment to execute arbitrary code.
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 2026.2.
Remediation
Check the references section for vendor advisories and patches from watchguard. Update fireware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| watchguard | fireware | >= 11.0.0, < 11.12.4 | Affected |
Frequently Asked Questions
What is CVE-2026-8247?
CVE-2026-8247 is a high-severity vulnerability affecting watchguard fireware. It was published on July 3, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-8247?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-8247?
Check the references section for vendor advisories and patches from watchguard. Update fireware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-8247?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-8247 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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