Path Traversal in Cisco Identity Services Engine Software

CVE-2026-76434

A vulnerability in the certificate import functionality of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read arbitrary files from the affected system. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient validation of user-supplied input by the affected feature. 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 read arbitrary files from the affected device, which could contain sensitive information.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-76434?
CVE-2026-76434 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Path Traversal. CVSS score: 4.9/10. Published 2026-09-16.
How severe is CVE-2026-76434?
Medium severity. CVSS v3 base score is 4.9 out of 10.