Cisco Catalyst Center up to 3.1.6-VA-GSMU100 path traversal

Summaryinfo

A vulnerability classified as critical has been found in Cisco Catalyst Center. This affects an unknown part. This manipulation causes path traversal. The identification of this vulnerability is CVE-2026-20191. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cisco Catalyst Center and classified as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. The summary by CVE is:

A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.  This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to read arbitrary files from a restricted container of the affected device.

It is possible to read the advisory at sec.cloudapps.cisco.com. This vulnerability is known as CVE-2026-20191 since 10/08/2025. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/01/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Cisco

Name

• Catalyst Center

Version

• 2.3.7.0-VA
• 2.3.7.5-VA
• 2.3.7.6-VA
• 2.3.7.7-VA
• 2.3.7.9-VA
• 2.3.7.10-VA
• 3.1.3
• 3.1.3-VA
• 3.1.5
• 3.1.5-RevUp
• 3.1.5-VA
• 3.1.6
• 3.1.6-BETA
• 3.1.6-GSMU100
• 3.1.6-VA
• 3.1.6-VA-GSMU100

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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