CVE-2026-20161— Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability
Quick assessment
Affected
Cisco Cisco ThousandEyes Enterprise Agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cisco ThousandEyes Enterprise Agent是美国思科（Cisco）公司的一个应用程序。提供了扩展的可视性、自动化的见解和无缝的工作流程。 Cisco ThousandEyes Enterprise Agent存在安全漏洞，该漏洞源于本地文件系统访问控制不当，可能导致具有低权限的经过身份验证的本地攻击者覆盖任意文件。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1548.001 · Setuid and Setgid
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I. Basic Information for CVE-2026-20161
Vulnerability Information
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Vulnerability Title
Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the CLI of Cisco ThousandEyes Enterprise Agent could allow an authenticated, local attacker with low privileges to overwrite arbitrary files on the local system of an affected device.
This vulnerability is due to improper access controls on files that are on the local file system of an affected device. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to bypass file system permissions and overwrite arbitrary files on the affected device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco ThousandEyes Enterprise Agent 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco ThousandEyes Enterprise Agent是美国思科（Cisco）公司的一个应用程序。提供了扩展的可视性、自动化的见解和无缝的工作流程。 Cisco ThousandEyes Enterprise Agent存在安全漏洞，该漏洞源于本地文件系统访问控制不当，可能导致具有低权限的经过身份验证的本地攻击者覆盖任意文件。
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 | Agent 5.0 | - |
|
II. Public POCs for CVE-2026-20161
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Cisco · 2026-04-15 · 15 CVEs total
| CVE-2026-20147 | 9.9 CRITICAL | Cisco Identity Services Engine Remote Code Execution Vulnerability |
| CVE-2026-20186 | 9.9 CRITICAL | Cisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability |
| CVE-2026-20180 | 9.9 CRITICAL | Cisco Identity Services Engine Multiple Remote Code Execution Vulnerability |
| CVE-2026-20184 | 9.8 CRITICAL | Cisco Webex Meetings Certificate Validation Vulnerability |
| CVE-2026-20078 | 6.5 MEDIUM | Cisco Unity Connection Arbitrary File Download Vulnerability |
| CVE-2026-20081 | 6.5 MEDIUM | Cisco Unity Connection Arbitrary File Download Vulnerability |
| CVE-2026-20170 | 6.1 MEDIUM | Cisco Webex Contact Center 安全漏洞 |
| CVE-2026-20059 | 6.1 MEDIUM | Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability |
| CVE-2026-20136 | 6.0 MEDIUM | Cisco Identity Services Engine Authenticated Privilege Escalation Vulnerability |
| CVE-2026-20152 | 5.3 MEDIUM | Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability |
| CVE-2026-20148 | 4.9 MEDIUM | Cisco Identity Services Engine Path Traversal Vulnerability |
| CVE-2026-20132 | 4.8 MEDIUM | Cisco Identity Services Engine Multiple Cross-Site Scripting Vulnerabilities |
| CVE-2026-20060 | 4.7 MEDIUM | Cisco Unity Connection Open Redirect Vulnerability |
| CVE-2026-20061 | 4.3 MEDIUM | Cisco Unity Connection SQL Injection Vulnerability |
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V. Comments for CVE-2026-20161
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