CVE-2018-0154

HIGH7.5

CISA KEV

Published 2018-03-28 · Updated 2026-06-17 · Source psirt@cisco.com

Summary

CVE-2018-0154 is a high-severity (CVSS 7.5) vulnerability in Cisco IOS Software. CISA added it to the Known Exploited Vulnerabilities catalog on March 3, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 17, 2022. CISA does not currently list it as used in ransomware campaigns. Cisco has 101 vulnerabilities in the KEV catalog, 7 of them linked to ransomware.

All 101 known-exploited Cisco vulnerabilities →

Description

A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN traffic by the affected device. An attacker could exploit this vulnerability by sending crafted VPN traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to hang or crash, resulting in a DoS condition. Cisco Bug IDs: CSCvd39267.

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

CWE-399

CISA Known-Exploited Vulnerability

Product: Cisco — IOS Software

Name: Cisco IOS Software Integrated Services Module for VPN Denial-of-Service Vulnerability

Date added: 2022-03-03 · Due: 2022-03-17

Required action: Apply updates per vendor instructions.

References

View on NVD

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