CVE Watch—

CVE-2018-0159

Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability

CVSS

—

No CVSS

EPSS

7.0%

p93

KEV

YES

Mar 3, 2022

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

6.9%EPSS · 30 days7.0%

2026-06-302026-07-16

KEV catalog record

Product

Cisco / IOS Software and Cisco IOS XE Software

Vulnerability

Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability

Added to KEV

Mar 3, 2022

Remediate by

Mar 17, 2022

Known ransomware use

Summary description

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

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2018-0159

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