www.securityweek.com 4/2/2026, 12:52:19 PM · via preferred

Cisco Patches Critical and High-Severity Vulnerabilities

CVE-2026-20093: Critical Cisco IMC Flaw Allows Unauthenticated Admin Access to UCS Servers

CVE-2026-20093 is described as a critical authentication bypass flaw in Cisco IMC that could allow an unauthenticated remote attacker to bypass authentication and gain full administrative access to UCS servers. The vulnerability carries a CVSS score of 9.8 and stems from improper input validation in the password change functionality of IMC, enabling an…

First seen 2026-04-02T12:51:11.870Z · Last seen 2026-04-03T09:33:21.389Z

CyberSIXT Evidence Panel
CISA KEV Not in KEV
Patch Patch Status Unknown

ACCORDING to Cisco, the company has patched two critical and six high-severity vulnerabilities that could be exploited for authentication bypass, remote code execution, information disclosure, and privilege escalation. One critical flaw, CVE-2026-20160, affects Cisco Smart Software Manager On-Prem and could allow an attacker to abuse an exposed internal service to run arbitrary commands with root-level privileges.

The second critical flaw, CVE-2026-20093, is an authentication bypass issue tied to the handling of password change requests, enabling an unauthenticated attacker to modify administrator passwords and gain admin access. The fixes also cover a high-severity defect in Evolved Programmable Network Manager and another in SSM On-Prem related to privilege escalation.

In addition, four IMC vulnerabilities could let attackers execute arbitrary commands and obtain root privileges, with Cisco noting that more than two dozen enterprise products, including UCS C-series and E-series servers, are affected. Cisco says it is not aware of any of the vulnerabilities being exploited in the wild, and directs readers to its security advisories for further information.

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