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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0185
Multiple Vulnerabilities in CISCO

Original Issue Date:April 15, 2026

Severity Rating: HIGH

Software Affected

  • Cisco SSM On-Prem
  • Cisco Integrated Management Controller
  • 5000 Series Enterprise Network Compute Systems (ENCS)
  • Catalyst 8300 Series Edge uCPE
  • UCS C-Series M5 and M6 Rack Servers in standalone mode
  • UCS E-Series Servers M3 & M6
  • UCS S-Series Storage Servers in standalone mode
  • Cisco EPNM

Overview

Multiple vulnerabilities have been reported in CISCO, which could allow an attacker to execute remote code, command injection and gain elevated privileges on the targeted system.

Target Audience:
Individuals and IT administrators, security teams responsible for maintaining and updating CISCO products

Risk Assessment:
Risk of Remote code execution, elevation of privileges, or system instability

Impact Assessment:
Potential impact on confidentiality, integrity and availability of the system.

Description

1. Arbitrary Command Execution Vulnerability ( CVE-2026-20160   )

This vulnerability exists in Cisco Smart Software Manager On-Prem (SSM On-Prem) due to the unintentional exposure of an internal service. An attacker could exploit this vulnerability by sending a specially crafted request to the API of the exposed service.
Successful exploitation of this vulnerability could allow an attacker to execute commands with root-level privileges on the targeted system.

2. Authentication Bypass Vulnerability ( CVE-2026-20093   )

This vulnerability exists in Cisco Integrated Management Controller due to incorrect handling of password change requests. An attacker could exploit this vulnerability by sending a specially crafted HTTP request on the targeted system. 
Successful exploitation of this vulnerability could allow an attacker to bypass authentication, alter the passwords of any user on the targeted system, including an Admin user, and gain access to the system as that user.

3. Improper Authorization Vulnerability ( CVE-2026-20155   )

This vulnerability exists in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) due to improper authorization checks on a REST API endpoint of an affected device. An attacker could exploit this vulnerability by querying the affected endpoint.
Successful exploitation of this vulnerability could allow the attacker to view session information of active Cisco EPNM users, including users with administrative privileges on the targeted system.

4. Privilege Escalation Vulnerability ( CVE-2026-20151   )

This vulnerability exists in web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) 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.
Successful exploitation of this vulnerability could allow the attacker to elevate privileges on the targeted system.

5. Command Injection and Remote Code Execution Vulnerabilities ( CVE-2026-20094   CVE-2026-20095   CVE-2026-20096   CVE-2026-20097   )

Multiple vulnerabilities exist in the web-based management interface of Cisco Integrated Management Controller (IMC) due to improper validation of user-supplied input. An attacker could exploit these vulnerabilities by sending a specially crafted request on the targeted system.
Successful exploitation of these vulnerabilities could allow the attacker to execute arbitrary commands on the targeted system.

Solution

Apply appropriate security updates as mentioned in CISCO advisory:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssm-cli-execution-cHUcWuNr

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-auth-bypass-AgG2BxTn

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-epnm-improp-auth-mUwFWUU3

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-priv-esc-xRAnOuO8

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-cmd-inj-3hKN3bVt

References

CISCO
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssm-cli-execution-cHUcWuNr
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-auth-bypass-AgG2BxTn
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-epnm-improp-auth-mUwFWUU3
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-priv-esc-xRAnOuO8
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-cmd-inj-3hKN3bVt

CVE Name
CVE-2026-20160
CVE-2026-20093
CVE-2026-20155
CVE-2026-20151
CVE-2026-20094
CVE-2026-20095
CVE-2026-20096
CVE-2026-20097

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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