Is CVE-2026-20151 actively exploited?

No active exploitation of CVE-2026-20151 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20151 be exploited remotely?

Yes. CVE-2026-20151 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-20151?

CVE-2026-20151 has a CVSS score of 7.3 (HIGH).

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HIGH

CVE-2026-20151

CWE-201Published: April 1, 2026· Updated: Apr 3, 2026

7.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-20151 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.3.