CVE-2018-0159
Actively exploited. CVE-2018-0159 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial-of-service (DoS) condition.
CSIRTS triage
- What
- A vulnerability in the IKEv1 functionality could allow an unauthenticated, remote attacker to cause a denial of service.
- Who is affected
- Unauthenticated remote attackers can exploit this vulnerability against Cisco IOS and IOS XE devices.
- Urgency
- Immediate action is required due to the critical nature of the vulnerability and its exploitation status.
- Action
- Apply the latest security patches from Cisco.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 93% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2018-0159: Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerabilitycisa-kev · 2022-03-03
External references
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