CVE-2026-86131

CVE Enrichment

CVSS: 9.2 CRITICAL
EPSS: 0.42%
EPSS Percentile: 34.46%
CISA KEV: Not listed

Description

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.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Published: 30-Sep-2026 07:16
Last Modified: 07-Oct-2026 03:39
EPSS Date: 2026-10-11
CWE: CWE-94, CWE-295, CWE-829

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:P /
                            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

Affected Products / Versions

watchguard / fireware
Version / affected range: * · from (inclusive) 12.0 · before (exclusive) 12.5.21
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
watchguard / fireware
Version / affected range: * · from (inclusive) 12.12 · before (exclusive) 12.12.3
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
watchguard / fireware
Version / affected range: * · from (inclusive) 2025.0 · before (exclusive) 2026.2.3
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
watchguard / fireware
Version / affected range: * · from (inclusive) 2026.3 · before (exclusive) 2026.3.2
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

References

5d1c2695-1a31-4499-88ae-e847036fd7e3

Last enrichment sync: 12-Oct-2026 05:48
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2026-86552, CVE-2026-86554 (ZTE SmartLife), CVE-2026-101891, CVE-2026-87969, CVE-2026-86102, CVE-2026-86131 (WatchGuard), GHSA-cpc9-c4h3-2jwx (geoserver/geoserver-cloud), CVE-2026-93302, CVE-2026-89102 Weekly Security Recap: Exploited Citrix NetScaler Flaw and Dozens of Vulnerabilities

CVE (135)

Vendors (1)

Products (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.