Cisco Identity Services Engine Software Provisioning Download Service path traversal

Summaryinfo

A vulnerability was found in Cisco Identity Services Engine Software and ISE Passive Identity Connector and classified as critical. The affected element is an unknown function of the component Provisioning Download Service. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-76433. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Identity Services Engine Software and ISE Passive Identity Connector (the affected version is unknown). It has been rated as critical. Affected by this issue is an unknown code of the component Provisioning Download Service. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the client provisioning download feature of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to access protected files on an affected device. This vulnerability is due to insufficient validation of directory traversal character sequences in a user-supplied path when the software processes provisioning resource requests. An attacker could exploit this vulnerability by sending a crafted request to the provisioning download service. A successful exploit could allow the attacker to access protected files without authentication, potentially exposing sensitive information.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2026-76433 since 08/19/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/16/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Policy Management Software

Vendor

• Cisco

Name

• Identity Services Engine Software
• ISE Passive Identity Connector

License

• commercial

Website

• Vendor: https://www.cisco.com/

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