What’s Vulnerable › Vulnerabilities

CVE-2018-0147: Cisco Secure Access Control System Java Deserialization Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-03-25
• EPSS: 18.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-08 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Cisco Secure Access Control System: 5.2(0.3)

References

• http://www.securityfocus.com/bid/103328
• http://www.securitytracker.com/id/1040463
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-acs2
• http://www.securityfocus.com/bid/103328
• http://www.securitytracker.com/id/1040463
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-acs2
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0147

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