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CVE-2026-86132 is an integer underflow vulnerability in the IKEv2 daemon (iked) of WatchGuard Fireware OS. A remote unauthenticated attacker can send a specially crafted encrypted IKEv2 message, after negotiation of an AES-GCM cipher suite, to trigger a crash of the iked process.
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What an attacker gets, and what they’ve been doing with it.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Vulnerabilidad de subdesbordamiento de enteros en el procesamiento de mensajes IKEv2 cifrados con AES-GCM de WatchGuard Fireware OS, que permite denegación de servicio remota no autenticada mediante la caída de iked.
A remote, unauthenticated denial-of-service vulnerability caused by an integer underflow in the WatchGuard Fireware OS IKEv2 daemon (iked). An attacker can crash the daemon by sending a specially crafted encrypted IKEv2 message using an AES-GCM cipher suite.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.