CVE-2026-20151 HIGH

CVE-2026-20151: Cisco Smart Software Manager On-Prem Privilege Escalation Vulnerability

Vendor Cisco
Product Cisco Smart Software Manager On-Prem
Weakness CWE-201
Published April 1, 2026
Last update April 2, 2026

CVSS base score

7.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 1, 2026 CVE published
April 2, 2026 Record updated