SB2026050714 - Multiple vulnerabilities in Cisco IoT Field Network Director
Published: May 7, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Improper error handling (CVE-ID: CVE-2026-20167)
CWE-ID: CWE-388 - Error Handling
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling in the web-based management interface. A remote user can cause a denial of service condition on the target system.
2) Path traversal (CVE-ID: CVE-2026-20168)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to insufficient file access checks in the web-based management interface. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.
3) Command Injection (CVE-ID: CVE-2026-20169)
CWE-ID: CWE-77 - Command injection
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation in the web-based management interface. A remote user can pass specially crafted data to the application and execute arbitrary commands.
Remediation
Install update from vendor's website.