CVE-2026-19318CWE-121CWE-129CWE-191

CVE-2026-19318

published August 28, 2026

CVSS
9.3
EPSS
0%
Percentile
39.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · 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
0.00471 · 39.8th percentile
Weaknesses
CWE-121 · Stack-based Buffer Overflow; CWE-129 · Improper Validation of Array Index; CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-08-28T06:16Z
References (1)
https://psirt.watchguard.com/CVE-2026-19318 · 5d1c2695-1a31-4499-88ae-e847036fd7e3
EPSS history
Timeline
  • 27 AUG 23:24Z
    Fireware OS Pre-Authentication Stack Buffer Overflow in iked Allows Remote Code Execution
    cvelistv5