Cisco ThousandEyes Virtual Appliance Authenticated Web Interface Command Injection Vulnerability (CVE-2026-20350) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-20350

Cisco ThousandEyes Virtual Appliance Authenticated Web Interface Command Injection Vulnerability

Answer in brief

CVE-2026-20350 records a Unknown severity vulnerability in Cisco ThousandEyes Virtual Appliance Authenticated Web Interface Command Injection Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco ThousandEyes Enterprise Agent (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Cisco/Cisco ThousandEyes Enterprise Agent (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Cisco/Cisco ThousandEyes Enterprise Agentgeneric	Agent 5.0 \|\| Agent 4.4.4 \|\| Agent 4.4.3 \|\| Agent 4.4.2 \|\| Agent 4.2 \|\| Agent 4.1 \|\| Agent 4.0 \|\| Agent 5.1 \|\| Agent 5.1.2 \|\| Agent 5.1.3 \|\| Agent 5.2.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Cisco/Cisco ThousandEyes Enterprise Agent.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Source referencesec.cloudapps.cisco.com

Upstream source description

A vulnerability in the web-based management interface of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to inject arbitrary operating system commands. This vulnerability is due to improper validation of user-supplied input to the web-based management interface. An attacker could exploit this vulnerability by saving configuration details that contain malicious values. A successful exploit could allow the attacker to execute arbitrary operating system commands with root privileges. To exploit this vulnerability, the attacker must have valid administrative credentials.

Quoted source text, attributed separately from HOL analysis.