CVE-2026-19313
Fireware OS Pre-Authentication Heap Buffer Overflow in iked Allows Remote Code Execution
CRITICAL 9.3
At a glance
- Source
- NVD
- EPSS
- EPSS 0.71 % · percentile 53 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- WatchGuard
- NVD status
- Deferred
Description
An heap overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 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 | WatchGuard |
| CVSS 4.0 | CRITICAL 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-67333
- GCVE · GCVE-0-2026-19313
Affected products
| Product | Versions |
|---|---|
| WatchGuard · Fireware OS | affected 2025.0 < 2026.2.2 ; affected 12.0 < 12.12.2 |
| WatchGuard · Fireware OS | affected 12.0 < 12.5.20 ; affected 2026.3 < 2026.3.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |