CVE-2026-20148: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Cisco Cisco Identity Services Engine Software
CVE-2026-20148 is a medium severity vulnerability in Cisco Identity Services Engine Software that allows an authenticated attacker with administrative credentials to perform path traversal attacks. This flaw enables reading arbitrary files on the underlying operating system by sending crafted HTTP requests due to improper validation of user input. The vulnerability affects specific versions 3.1.0 through 3.5.0 of the software. There is no confirmed patch or official remediation guidance available at this time.
AI Analysis
Technical Summary
This vulnerability in Cisco ISE and Cisco ISE-PIC arises from improper validation of user-supplied input, allowing an authenticated remote attacker with administrative privileges to perform path traversal attacks. By sending specially crafted HTTP requests, the attacker can read arbitrary files on the affected system, potentially exposing sensitive information. The CVSS 3.1 base score is 4.9 (medium), reflecting network attack vector, low complexity, high privileges required, no user interaction, unchanged scope, high confidentiality impact, and no integrity or availability impact. Affected versions explicitly include 3.1.0, 3.2.0, 3.3.0, 3.4.0, and 3.5.0. No vendor advisory or patch information is currently provided.
Potential Impact
An attacker with valid administrative credentials can exploit this vulnerability to read arbitrary files on the underlying operating system of the affected Cisco ISE systems. This could lead to exposure of sensitive information stored on the system. There is no indication of impact on system integrity or availability.
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 involving crafted HTTP requests targeting path traversal.
CVE-2026-20148: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Cisco Cisco Identity Services Engine Software
Description
CVE-2026-20148 is a medium severity vulnerability in Cisco Identity Services Engine Software that allows an authenticated attacker with administrative credentials to perform path traversal attacks. This flaw enables reading arbitrary files on the underlying operating system by sending crafted HTTP requests due to improper validation of user input. The vulnerability affects specific versions 3.1.0 through 3.5.0 of the software. There is no confirmed patch or official remediation guidance available at this time.
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-engine-softwareRun 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 in Cisco ISE and Cisco ISE-PIC arises from improper validation of user-supplied input, allowing an authenticated remote attacker with administrative privileges to perform path traversal attacks. By sending specially crafted HTTP requests, the attacker can read arbitrary files on the affected system, potentially exposing sensitive information. The CVSS 3.1 base score is 4.9 (medium), reflecting network attack vector, low complexity, high privileges required, no user interaction, unchanged scope, high confidentiality impact, and no integrity or availability impact. Affected versions explicitly include 3.1.0, 3.2.0, 3.3.0, 3.4.0, and 3.5.0. No vendor advisory or patch information is currently provided.
Potential Impact
An attacker with valid administrative credentials can exploit this vulnerability to read arbitrary files on the underlying operating system of the affected Cisco ISE systems. This could lead to exposure of sensitive information stored on the system. There is no indication of impact on system integrity or availability.
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 involving crafted HTTP requests targeting path traversal.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.385Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69dfb9f882d89c981f6ee6ab
Added to database: 04/15/2026, 16:16:56 UTC
Last enriched: 08/13/2026, 20:46:29 UTC
Last updated: 09/12/2026, 14:38:51 UTC
Views: 224
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