[NEW] [high] WatchGuard Firebox OS: Multiple vulnerabilities
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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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3068
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-2026-130860.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193130.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193140.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193150.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193160.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193170.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-193180.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-780080.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-780090.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-780100.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-13086 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19313 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19314 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19315 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19316 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19317 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-19318 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-78008 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-78009 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-78010 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-78011 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-81851 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownNCSC-2026-0335 [1.00] [M/H] Vulnerabilities fixed in WatchGuard Fireware OSncsc-nl
- unknownCVE-2026-78011: An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote …nvd
- unknownCVE-2026-78010: A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows…nvd
- unknownCVE-2026-78009: An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote…nvd
- unknownCVE-2026-78008: A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an auth…nvd
- unknownCVE-2026-19318: A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows …nvd
- unknownCVE-2026-19317: An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote…nvd
- unknownCVE-2026-19316: A double-free vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthe…nvd
- unknownCVE-2026-19315: A type confusion vulnerability in the iked process of WatchGuard Fireware OS allows a remote u…nvd
- unknownCVE-2026-19314: An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote …nvd
- unknownCVE-2026-19313: An heap overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unau…nvd
- unknownCVE-2026-13086: A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the dep…nvd
Recent advisories for WatchGuard Firebox 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.
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