An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2… (CVE-2026-86133)
CVE-2026-86133 is an integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked). A remote attacker who completes the initial IKEv2 handshake can send a specially crafted encrypted IKEv2 message to crash the iked process, causing a denial of service. The vulnerability affects multiple versions of Fireware OS prior to fixed releases. The CVSS 4.0 score is 8.2, indicating high severity. No known exploits are reported in the wild. Patch status is not provided in the input data.
AI Analysis
Technical Summary
CVE-2026-86133 describes an integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked). After completing the initial IKEv2 handshake, a remote attacker can exploit this flaw by sending a specially crafted encrypted IKEv2 message that triggers an integer underflow, resulting in the crash of the iked process and denial of service. No information about patches or fixes is provided in the available data.
Potential Impact
Successful exploitation leads to denial of service by crashing the iked process on the affected device. This disrupts VPN or secure communication services relying on the IKE daemon. There is no indication of privilege escalation or data compromise from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual IKEv2 traffic patterns and consider limiting exposure of the IKE service to trusted networks.
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2… (CVE-2026-86133)
Description
CVE-2026-86133 is an integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked). A remote attacker who completes the initial IKEv2 handshake can send a specially crafted encrypted IKEv2 message to crash the iked process, causing a denial of service. The vulnerability affects multiple versions of Fireware OS prior to fixed releases. The CVSS 4.0 score is 8.2, indicating high severity. No known exploits are reported in the wild. Patch status is not provided in the input data.
CVSS v4.0
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86133 describes an integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked). After completing the initial IKEv2 handshake, a remote attacker can exploit this flaw by sending a specially crafted encrypted IKEv2 message that triggers an integer underflow, resulting in the crash of the iked process and denial of service. No information about patches or fixes is provided in the available data.
Potential Impact
Successful exploitation leads to denial of service by crashing the iked process on the affected device. This disrupts VPN or secure communication services relying on the IKE daemon. There is no indication of privilege escalation or data compromise from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual IKEv2 traffic patterns and consider limiting exposure of the IKE service to trusted networks.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-c7wr-f27v-pxx3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86133"]
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abc5d3f680226ef6899ba3c
Added to database: 09/30/2026, 00:52:15 UTC
Last enriched: 09/30/2026, 01:21:34 UTC
Last updated: 09/30/2026, 01:27:04 UTC
Views: 3
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