Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution (WatchGuard Fireware OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.43 % · percentile 38 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- WatchGuard
- NVD status
- Awaiting Analysis
Description
A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by tampering with a FireCloud Gateway configuration payload.
Weaknesses (CWE)
- CWE-121 — Stack-based Buffer Overflow
- CWE-1284 — Improper Validation of Specified Quantity in Input
- CWE-787 — Out-of-bounds Write
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 9.5 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | WatchGuard |
| CVSS 4.0 | CRITICAL 9.5 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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-2026-111159
- GCVE · GCVE-0-2026-103594
Affected products
| Product | Versions |
|---|---|
| WatchGuard · Fireware OS | affected 2026.2 < 2026.4 ; affected 12.12 < 12.12.4 |
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 |