CVE-2018-0147
Cisco Secure Access Control System Java Deserialization Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 25 Mar 2022
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.
Key facts
- Published
- 8 Mar 2018
- Last changed
- 12 Jan 2026
- Assigned by
- cisco
- KEV added
- 25 Mar 2022
- KEV fix due
- 15 Apr 2022
- EPSS
- 18.212% likely to be exploited in the next 30 days, higher than 97.258% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | Cisco Secure Access Control System |
|
Timeline
- 8 Mar 2018 Published
- 25 Mar 2022 Added to the CISA KEV catalogue