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CVE-2026-75616— Command Injection in Router Web Management Interface

Quick assessment

Affected
TP-Link Systems Inc. Archer C20 v6
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.

TP-Link Archer C20是中国TP-Link公司的一款无线双频路由器。 TP-Link Archer C20 v6 EU_0.9.1 Build 260811之前版本、US_0.9.1 Build 260812之前版本和RU_0.9.1 Build 260812之前版本存在命令注入漏洞，该漏洞源于网络管理接口在处理特定WAN相关配置操作时输入验证不足，可能导致经过身份验证的管理员执行任意系统命令，从而完全破坏设备并影响设备及其传输网络流量的机密性、完整性和可用性。

CVSS 8.5 · High EPSS 2.83% · P86

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
TP-Link Systems Inc. Archer C20 v6 < EU_0.9.1 Build 260811 affected
< US_0.9.1 Build 260812 affected
< RU_0.9.1 Build 260812 affected
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I. Basic Information for CVE-2026-75616

Vulnerability Information
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Vulnerability Title
Command Injection in Router Web Management Interface
Source: CVE Program / CVE List V5
Vulnerability Description
An OS command injection vulnerability exists in the web management interface of Archer C20 v6 firmware when processing certain WAN-related configuration operations. An authenticated administrator may exploit insufficient input validation to execute arbitrary system commands, potentially resulting in full device compromise. Successful exploitation may allow arbitrary command execution with elevated privileges, compromising the confidentiality, integrity, and availability of the affected device and network traffic passing through it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link Archer C20 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link Archer C20是中国TP-Link公司的一款无线双频路由器。 TP-Link Archer C20 v6 EU_0.9.1 Build 260811之前版本、US_0.9.1 Build 260812之前版本和RU_0.9.1 Build 260812之前版本存在命令注入漏洞，该漏洞源于网络管理接口在处理特定WAN相关配置操作时输入验证不足，可能导致经过身份验证的管理员执行任意系统命令，从而完全破坏设备并影响设备及其传输网络流量的机密性、完整性和可用性。
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
TP-Link Systems Inc. Archer C20 v6 0 ~ EU_0.9.1 Build 260811 -

II. Public POCs for CVE-2026-75616

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III. Intelligence Information for CVE-2026-75616

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Vendor Advisories for CVE-2026-75616 (1)

Vendor Pages for CVE-2026-75616 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-08-19 · 4 CVEs total

CVE-2026-75618 7.1 HIGH RTSP Null Pointer Dereference Denial-of-Service Vulnerability on TP-Link Tapo C100 and C10
CVE-2026-8619 7.1 HIGH Unauthenticated Denial-of-Service Vulnerability in HTTP Service in TP-Link TL-MR100, TL-MR
CVE-2026-75619 6.9 MEDIUM RTSP Heap Buffer Overflow Denial-of-Service Vulnerability on TP-Link Tapo C100 and C101

IV. Related Vulnerabilities

Same vendor: TP-Link Systems Inc.
Same weakness: CWE-78

V. Comments for CVE-2026-75616

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