Medium [CVE-2026-20199] Cisco ThousandEyes Virtual Appliance Authenticated Remote Code Execution Vulnerability
This medium-severity Cisco advisory covers CVE-2026-20199 affecting ThousandEyes Enterprise Agent.
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Summary
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.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Affected product named by the advisory: ThousandEyes Enterprise Agent.
- Scope: At the time of publication, this vulnerability affected Cisco ThousandEyes Virtual Appliance, regardless of device configuration.
- Release Earlier than 0.262 (first fixed: 0.262.0)
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 0.262.0
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Earlier than 0.262: upgrade to 0.262.0.
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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