Path traversal in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) - CVE-2026-20148
Published: April 17, 2026
Vulnerability identifier: #VU126397
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20148
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system.
Affected software
Cisco Identity Services Engine (ISE)
ISE Passive Identity Connector (ISE-PIC)
ISE Passive Identity Connector (ISE-PIC)
How to mitigate CVE-2026-20148
Install updates from vendor's website.
Cisco Identity Services Engine (ISE) - addressed in versions 3.1 Patch 11, 3.2 Patch 10, 3.3 Patch 11, 3.4 Patch 6, 3.5 Patch 3
ISE Passive Identity Connector (ISE-PIC) - addressed in versions 3.1 Patch 11, 3.2 Patch 10, 3.3 Patch 11, 3.4 Patch 6
ISE Passive Identity Connector (ISE-PIC) - addressed in versions 3.1 Patch 11, 3.2 Patch 10, 3.3 Patch 11, 3.4 Patch 6