CVE-2026-20151

Cisco Smart Software Manager On-Prem Privilege Escalation Vulnerability

State: Published
Severity: 7.3 High
Published: Apr 1, 2026
Updated: Apr 2, 2026
Reserved: Oct 8, 2025

Description

A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system.

This vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User. Note: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N	cisco

Weaknesses

CWE-201 Insertion of Sensitive Information Into Sent Data

Affected Products

Product	Versions
Cisco Smart Software Manager On-PremCisco	7-202001Affected 8-202004Affected 8-202006Affected 8-202012Affected 8-202010Affected 8-202008Affected 9-202201Affected 8-202102Affected 8-202105Affected 8-202108Affected 8-202112Affected 8-202201Affected 8-202206Affected 8-202212Affected 8-202302Affected 8-202303Affected 8-202304Affected 8-202308Affected 8-202401Affected 8-202404Affected 9-202406Affected 9-202407Affected 9-202410Affected 9-202412Affected 9-202501Affected and 4 more versions

Product

Versions

Cisco Smart Software Manager On-PremCisco

7-202001Affected
8-202004Affected
8-202006Affected
8-202012Affected
8-202010Affected
8-202008Affected
9-202201Affected
8-202102Affected
8-202105Affected
8-202108Affected
8-202112Affected
8-202201Affected
8-202206Affected
8-202212Affected
8-202302Affected
8-202303Affected
8-202304Affected
8-202308Affected
8-202401Affected
8-202404Affected
9-202406Affected
9-202407Affected
9-202410Affected
9-202412Affected
9-202501Affected
and 4 more versions

References

cisco-sa-cssm-priv-esc-xRAnOuO8

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