Path Traversal in Cisco Identity Services Engine Software
CVE-2026-20146
A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system to either read or delete arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to access sensitive files or delete arbitrary files on the affected system.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Cisco Identity Services Engine Software — versions 3.1.0, 3.1.0 p1, 3.1.0 p3
- Cisco Ise Passive Identity Connector — versions 3.2.0, 3.1.0, 3.3.0
- Cisco Identity Services Engine — versions 3.3.0, 3.4.0, 3.5.0
- Cisco Identity Services Engine Passive Connector — versions 3.3.0, 3.4.0, 3.5.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20146?
- CVE-2026-20146 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-07-15.
- How severe is CVE-2026-20146?
- Medium severity. CVSS v3 base score is 5.5 out of 10.