CISA-confirmed known exploited vulnerability

CVE-2018-0147

Cisco Secure Access Control System Java Deserialization Vulnerability

Cisco · Secure Access Control System (ACS)

Vulnerability details

A vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. The vulnerability is due to insecure deserialization of user-supplied content by the affected software.

Added to CISA KEV: 2022-03-25

Ransomware campaign use: Unknown

CISA due date: 2022-04-15

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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