Vulnerability Intelligence Report
Command Injection in Router Web Management Interface
CVE-2026-75616
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.
Injection
No Active Exploit Signals
CVSS Base Score
8.5
HIGH
EPSS Probability:1.14%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-78 ↗CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| TP-Link Systems Inc. | Archer C20 v6 | 0 < EU_0.9.1 Build 260811 (affected), 0 < US_0.9.1 Build 260812 (affected), 0 < RU_0.9.1 Build 260812 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | TP-Link Systems Inc. · Vendor · USA |
| Reserved | 2026-08-17T23:56:24 |
| Published | 2026-08-19T20:44:11 |
| Last Updated | 2026-08-20T15:26:33 |
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