CVE-2026-19318

9.3 criticalEPSS 0.7%

Critical (9.3). EPSS 0.7% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

Severity

CVSS 4.0

9.3 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWEs: CWE-121, CWE-129, CWE-191
Published: 2026-08-28
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19

References

https://psirt.watchguard.com/CVE-2026-19318

Check your stack JSON