Medium severity · published Jul 15, 2026
CVE-2026-20146
Cisco Identity Services Engine Path Traversal Vulnerability
5.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CI
Cisco ISE Passive Identity Connector · Cisco
3.2.0; 3.1.0; 3.3.0; 3.4.0; 3.5.0 · source: vendor
CI
Cisco Identity Services Engine Software · Cisco
3.1.0; 3.1.0 p1; 3.1.0 p3; 3.1.0 p2; 3.2.0; 3.1.0 p4; +34 more · source: vendor
IS
Identity Services Engine · Cisco
before 3.3.0; 3.3.0; 3.3.0; 3.3.0; 3.3.0; 3.3.0; +18 more · source: NVD
IS
Identity Services Engine Passive Identity Connector · Cisco
before 3.3.0; 3.3.0; 3.3.0; 3.3.0; 3.3.0; 3.3.0; +14 more · source: NVD
Affected product
CI
Cisco Identity Services Engine Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20146
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20146
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-traversal-xNt7wb2Y
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