CVE-2026-86131
criticalA code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server t…
Vendor / product: Watchguard — fireware
A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server to execute arbitrary commands as root on the connecting Firebox.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-09-30 00:16
Modified: 2026-10-06 20:39
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
watchguard / fireware ≥12.0 <12.5.21, ≥12.12 <12.12.3, ≥2025.0 <2026.2.3, ≥2026.3 <2026.3.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://psirt.watchguard.com/CVE-2026-86131
Patch / mitigation: https://psirt.watchguard.com/CVE-2026-86131
References
- https://psirt.watchguard.com/CVE-2026-86131 5d1c2695-1a31-4499-88ae-e847036fd7e3
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗