CVE-2018-0158
Actively exploited. CVE-2018-0158 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 implementation of Internet Key Exchange Version 1 (IKEv1) functionality could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial-of-service (DoS) condition.
- Who is affected
- Users of Cisco IOS and XE Software are affected by this vulnerability.
- Urgency
- Remediation is critical due to the potential for denial of service and confirmed exploitation.
- Action
- Update to the latest version of Cisco IOS and XE Software.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2018-0158
Get an email if CVE-2018-0158 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 94% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2018-0158: Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerabilitycisa-kev · 2022-03-03
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2018-0158)