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

> CVE-2018-0147: Cisco Secure Access Control System Java Deserialization Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-0147
Last updated: 2026-01-12T22:14:20Z

- Published: 2018-03-08 07:00 UTC · Updated: 2026-01-12 22:14 UTC · Assigner: cisco
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 18.2%, 97th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-03-25, federal due date 2022-04-15, ransomware use: Unknown
- CWE: 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- n/a: Cisco Secure Access Control System

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-0147)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-0147)
- [https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-acs2](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-acs2)
- [http://www.securityfocus.com/bid/103328](http://www.securityfocus.com/bid/103328)
- [http://www.securitytracker.com/id/1040463](http://www.securitytracker.com/id/1040463)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2018-0147 · Markdown: https://rewindex.com/cve/CVE-2018-0147.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-0147 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:02:09.214Z