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CVE-2026-76431: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Cisco Cisco Identity Services Engine Software

0
Medium
VulnerabilityCVE-2026-76431cvecve-2026-76431
Published: 09/16/2026 (09/16/2026, 20:24:53 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: 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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected software

Cisco

Cisco Identity Services Engine Software

Affected versions
=3.1.0=3.2.0=3.3.0=3.4.0=3.5.0

Cisco

Cisco ISE Passive Identity Connector

Affected versions
=3.2.0=3.1.0=3.3.0=3.4.0=3.5.0
GitHub Actionsmore threats →ai
cisco/identity-services-engine
pkg:github/cisco/identity-services-engine
Affected versions
=3.1.0=3.2.0=3.3.0=3.4.0=3.5.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/16/2026, 22:02:12 UTC

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.

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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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