CVE-2026-76431: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Cisco Cisco Identity Services Engine Software
A vulnerability in the file management function of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to delete arbitrary files and directories on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of directory traversal character sequences in a user-supplied file path before the request is validated. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to delete arbitrary files and directories on the underlying operating system of the affected device.
AI Analysis
Technical Summary
This vulnerability exists in the file management function of the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE-PIC. An authenticated remote attacker with valid administrative credentials can exploit improper validation of directory traversal character sequences in user-supplied file paths to delete arbitrary files and directories on the underlying operating system. Exploitation requires sending a crafted request to the management interface. The CVSS 3.1 base score is 4.9, reflecting low attack complexity but requiring high privileges and no user interaction.
Potential Impact
Successful exploitation allows an attacker with administrative credentials to delete arbitrary files and directories on the affected device's operating system, potentially disrupting system functionality or causing denial of service. There is no confidentiality or availability impact noted, but integrity is impacted due to unauthorized file deletion.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrative access to trusted personnel only and monitor for suspicious activity. Since exploitation requires valid administrative credentials, enforcing strong authentication and access controls is critical.
CVE-2026-76431: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Cisco Cisco Identity Services Engine Software
Description
A vulnerability in the file management function of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to delete arbitrary files and directories on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of directory traversal character sequences in a user-supplied file path before the request is validated. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to delete arbitrary files and directories on the underlying operating system of the affected device.
CVSS v3.1
Score 4.9medium
Affected software
Cisco
Cisco Identity Services Engine Software
Cisco
Cisco ISE Passive Identity Connector
pkg:github/cisco/identity-services-engineRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in the file management function of the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE-PIC. An authenticated remote attacker with valid administrative credentials can exploit improper validation of directory traversal character sequences in user-supplied file paths to delete arbitrary files and directories on the underlying operating system. Exploitation requires sending a crafted request to the management interface. The CVSS 3.1 base score is 4.9, reflecting low attack complexity but requiring high privileges and no user interaction.
Potential Impact
Successful exploitation allows an attacker with administrative credentials to delete arbitrary files and directories on the affected device's operating system, potentially disrupting system functionality or causing denial of service. There is no confidentiality or availability impact noted, but integrity is impacted due to unauthorized file deletion.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrative access to trusted personnel only and monitor for suspicious activity. Since exploitation requires valid administrative credentials, enforcing strong authentication and access controls is critical.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2026-08-19T12:02:03.634Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aab005e55bf5e2cf5231deb
Added to database: 09/16/2026, 20:47:26 UTC
Last enriched: 09/16/2026, 22:02:12 UTC
Last updated: 09/17/2026, 04:01:23 UTC
Views: 2
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