CVE-2026-78011
An attacker can exploit multiple vulnerabilities in WatchGuard Firebox OS to execute arbitrary code, including code with root privileges, or cause a denial-of-service condition.
CSIRTS triage
- What
- Multiple vulnerabilities allow arbitrary code execution including with root privileges and denial of service.
- Who is affected
- WatchGuard Firebox firewall appliances are affected.
- Urgency
- High severity; arbitrary code execution at root level on network-critical infrastructure requires urgent patching.
- Action
- Apply security updates for WatchGuard Firebox OS immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] WatchGuard Firebox OS: Multiple vulnerabilitiescert-bund · 2026-08-28
- unknownCVE-2026-78011: An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote …nvd · 2026-08-28
External references
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