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CVE-2026-75616

HighPublished

Command Injection in Router Web Management Interface

Published: Aug 19, 2026
Updated: Aug 20, 2026
Assigning CNA: TPLink
Evidence observed: Aug 24, 2026

Primary CVSS

8.5/ 10High

nvd · CVSS 4.0

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

3.1%

Low · next 30 days

Percentile: 87.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-75616PoC
Proof-of-concept exploit for authenticated OS command injection in TP-Link Archer C20 v6 web management interface, executing root commands via BPA WAN configuration over LAN.

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