CVE-2026-20199
MediumCVSS 4.7Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
A vulnerability in SSL certificate handling of Cisco ThousandEyes Virtual Appliance allows an authenticated remote attacker to execute code as root on the underlying OS. The issue is due to insufficient input validation.
Risk Assessment
An attacker with administrative access can gain full control over the appliance, compromising confidentiality, integrity, and availability of the system and potentially the entire network.
Recommendation
Apply the Cisco-provided update for ThousandEyes Virtual Appliance immediately and restrict administrative access to trusted accounts.
Original NVD description (English source)
A vulnerability in the SSL certificate handling of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to execute commands on the underlying operating system as the root user. This vulnerability is due to insufficient validation of user-supplied input. An authenticated attacker could exploit this vulnerability by uploading a crafted certificate to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system. To exploit this vulnerability, the attacker must have valid administrative credentials.