Search/CVE-2026-86133
● CVE — High

CVE-2026-86133

VendorwatchguardProductfirewareDiscoveredSep 30, 2026UpdatedOct 6, 2026

An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.

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CVSS v3.1
7.5 HIGH
EPSS
0.35%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Oct 2, 2026 → Oct 22, 2026
● 0.01pp
0.34% → 0.35% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Connections
3 relationships
Timeline
disclosure → media coverage
Sep 30, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 6, 2026