CVE-2026-86132: CWE-191 in WatchGuard Fireware OS
An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
CVE-2026-86132: CWE-191 in WatchGuard Fireware OS
Description
An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
CVSS v4.0
Score 8.2high
Affected software
WatchGuard
Fireware OS
WatchGuard
Fireware OS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-09-05T02:57:30.608Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abc4826680226ef686df2cb
Added to database: 09/29/2026, 23:22:14 UTC
Last updated: 09/29/2026, 23:22:14 UTC
Views: 1
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