Home › Exploited CVEs › CVE-2018-0159
CVE-2018-0159: Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability
Cisco IOS Software and Cisco IOS XE Software · in CISA KEV since 2022-03-03
2022-03-03added to KEV
2022-03-17federal remediation due date
6.87%EPSS exploit probability (30 days) 93.8th percentile
7.5 HIGHCVSS 3.1
Unknownknown ransomware use
1,436days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-20 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD published | 2018-03-28 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2018-0159.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.