Known exploited vulnerability

CVE-2018-0154

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

What is affected

Vendor Cisco
Product IOS Software
Weakness CWE-399

The vulnerability

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.

Required action

Apply updates per vendor instructions.

US federal civilian agencies were required to act by 17 March 2022 under BOD 22-01. The deadline is a compliance date, not a measure of severity — it says nothing about how dangerous the flaw is to anyone else.

Where this comes from

Every field on this page is taken from the CISA Known Exploited Vulnerabilities catalog, last synced 11 Nov 2026, 21:30. Nothing here is our own assessment. For the technical scoring, see the NVD record below.

NVD record ↗ CVE.org record ↗

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