Search/CVE-2026-86131
● CVE — Critical

CVE-2026-86131

VendorwatchguardProductfirewareDiscoveredSep 30, 2026UpdatedOct 6, 2026

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.

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CVSS v3.1
9.8 CRITICAL
EPSS
0.42%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
2
sources referencing this CVE
Related IOCs
1
seen in the same coverage
EPSS Trend
Oct 2, 2026 → Oct 22, 2026
▲ 0.09pp
0.33% → 0.42% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Connections
6 relationships
Timeline
disclosure → media coverage
Sep 30, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 6, 2026
Sep 30, 2026
securityweek.com reports: WatchGuard Patches Critical Fireware OS Code Injection Vulnerability
Oct 5, 2026
thehackernews.com reports: ⚡ Weekly Recap: NetScaler and FortiMail 0-Days, AI Coding Leaks, Spectre v2 and Ransomware Arrests