SB20260917233 - Multiple path traversal vulnerabilities in Cisco Identity Services Engine
Published: September 17, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Path traversal (CVE-ID: CVE-2026-76431)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to delete arbitrary files and directories.
The vulnerability exists due to improper validation of directory traversal character sequences in the file management function of the web-based management interface when validating user-supplied file paths. A remote privileged user can send a crafted request to the web-based management interface to delete arbitrary files and directories.
The files and directories may be deleted from the underlying operating system.
2) Path traversal (CVE-ID: CVE-2026-76432)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to write arbitrary files.
The vulnerability exists due to improper validation of directory traversal character sequences in the web-based management interface when processing file uploads. A remote privileged user can upload a crafted file to write arbitrary files.
3) Path traversal (CVE-ID: CVE-2026-76433)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to access protected files.
The vulnerability exists due to insufficient validation of directory traversal character sequences in the client provisioning download feature when processing provisioning resource requests. A remote attacker can send a crafted request to the provisioning download service to access protected files.
4) Path traversal (CVE-ID: CVE-2026-76434)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 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]
The vulnerability allows a remote user to read arbitrary files.
The vulnerability exists due to insufficient validation of user-supplied input in the certificate import functionality of the web-based management interface when processing certificate import requests. A remote privileged user can send a crafted request to the web-based management interface to read arbitrary files.
Remediation
Install update from vendor's website.