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    CVE-2026-86133

    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.

    Published:Sep 29, 2026
    Last Modified:Oct 6, 2026
    EPS:Sep 29, 2026
    EPSS Score:0.0034
    CVSS Score:7.5

    Affected Products

    Vendor
    Watchguard
    Product
    Fireware
    Vendor
    Watchguard
    Product
    Fireware Os

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-18145 (CVSS 8.6) — A stack-based buffer overflow vulnerability in the spamBlocker (spamd) service of WatchGuard Fireware OS allow…
    CVE-2026-86101 (CVSS 7.2) — An improper authorization vulnerability in WatchGuard Fireware OS's SAML login process allows a remote, authen…
    CVE-2026-13046 (CVSS 7.5) — A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session hand…
    CVE-2026-86131 (CVSS 9.2) — A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows…
    CVE-2026-13224 (CVSS 8.2) — A path traversal vulnerability in the Fireware OS WebUI management agent allows an authenticated administrator…
    CVE-2026-90441 (CVSS 7.1) — A missing authorization vulnerability in the wgagent management daemon's session initialization function allow…
    CVE-2026-18105 (CVSS 7.1) — An uncontrolled resource consumption vulnerability in Fireware OS's diagnostic tasks feature allows a low-priv…
    CVE-2026-86105 (CVSS 6) — An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High