Review reviewCritical

CVE-2026-20160

Cisco Cisco Smart Software Manager On-Prem, smart software manager on-prem

A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected SSM On-Prem host. This vulnerability is due to the unintentional exposure of an internal service. An attacker could exploit this vulnerability by sending a crafted request to the API of the exposed service. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges.

CVSS: 9.8
EPSS: 0.91%
CISA KEV: Not listed
Published: 2026.04.02

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.91%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Cisco Cisco Smart Software Manager On-Prem, smart software manager on-prem
Affected versions: 9-202502, 9-202504, 9-202507, 9-202510, >= 9-202502 < 9-202601
Fixed versions: 9-202601

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Cisco Cisco Smart Software Manager On-Prem, smart software manager on-prem and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-668