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CVE-2018-0147

CRITICAL CISA KEV

A vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) prior to release 5.8 patch 9 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. An attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary commands on the device with root privileges. Cisco Bug IDs: CSCvh25988.

Published: Mar 8, 2018 Modified: Jun 17, 2026
CWE-20 CWE-502

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

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

Affected Products (1)

Vendor Product Version
cisco secure_access_control_system 5.2\(0.3\)

GitHub Security Advisory GHSA-2ccw-7gjg-m467

A vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) prior to...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 18.33%

Top 3% most likely to be exploited

Threat Score 74.7 / 100

CISA Known Exploited

Date Added: 2022-03-25
Due Date: 2022-04-15
Required Action:

Apply updates per vendor instructions.

Data Sources

NVD CISA KEV EPSS GitHub