CVE-2026-20199
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco ThousandEyes Enterprise Agent | N/A | affected |
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I. Basic Information for CVE-2026-20199
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco ThousandEyes Virtual Appliance 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco ThousandEyes Virtual Appliance是美国思科（Cisco）公司的一款提供网络路径监测与数字体验可观测能力的虚拟化网络监控设备。 Cisco ThousandEyes Virtual Appliance存在注入漏洞，该漏洞源于SSL证书处理中用户输入验证不足，可能导致认证远程攻击者以root用户身份执行命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco ThousandEyes Enterprise Agent | N/A | - |
II. Public POCs for CVE-2026-20199
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-20199 (1)
Same Patch Batch · Cisco · 2026-05-20 · 4 CVEs total
| CVE-2026-20223 | 10.0 CRITICAL | Cisco Secure Workload Unauthorized API Access Vulnerability |
| CVE-2026-20171 | 6.8 MEDIUM | Cisco Nexus 3000 and 9000 Series Border Gateway Protocol Denial of Service Vulnerability |
| CVE-2026-20206 | 6.3 MEDIUM | Cisco ThousandEyes BrowserBot Command Injection Vulnerability |
IV. Related Vulnerabilities
Same vendor: Cisco
- CVE-2026-20171
Cisco Nexus 3000 and 9000 Series Border Gateway Protocol Den - CVE-2026-20206
Cisco ThousandEyes BrowserBot Command Injection Vulnerabilit - CVE-2026-20223
Cisco Secure Workload Unauthorized API Access Vulnerability - CVE-2026-20224
Cisco Catalyst SD-WAN Manager XML External Entity Injection - CVE-2026-20210
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerabi
Same weakness: CWE-74
- CVE-2026-9366
NousResearch hermes-agent prompt_builder.py _scan_context_co - CVE-2026-9353
NousResearch hermes-agent Skills Guard Multi-Word Prompt ski - CVE-2026-6279
Avada (Fusion) Builder <= 3.15.2 - Unauthenticated Remote Co - CVE-2026-42334
Mongoose: Improper Sanitization of $nor in sanitizeFilter Ma - CVE-2026-44458
Hono: CSS Declaration Injection via Style Object Values in J
V. Comments for CVE-2026-20199
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