SB2026041731 - Link following in Cisco ThousandEyes Enterprise Agent
Published: April 17, 2026
Security Bulletin ID
SB2026041731
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Link following (CVE-ID: CVE-2026-20161)
CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to an insecure link following issue in the CLI. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Remediation
Install update from vendor's website.