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

Technical Severity

CVSS v3.1 Metrics

HIGH

7.5 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation Likelihood

EPSS Prediction

6.97 %

Predictive Probability

Percentile Rank

91.4 th

Documented as more likely to be exploited than 91.4% of known CVEs.

Detection Date

Mar 03, 2022

Remediation Due

Mar 17, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

NVD

National Vulnerability Database

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