Command Injection in Router Web Management Interface (CVE-2026-75616) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-75616

Command Injection in Router Web Management Interface

Answer in brief

CVE-2026-75616 records a Unknown severity vulnerability in Command Injection in Router Web Management Interface. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./Archer C20 v6 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Aug 19, 2026Source checked Aug 19, 2026First seen by HOL Aug 19, 2026Material review Aug 19, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link Systems Inc./Archer C20 v6 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TP-Link Systems Inc./Archer C20 v6generic	>=0 <EU_0.9.1 Build 260811 \|\| >=0 <US_0.9.1 Build 260812 \|\| >=0 <RU_0.9.1 Build 260812	EU_0.9.1 Build 260811, US_0.9.1 Build 260812, RU_0.9.1 Build 260812

Recommended response

Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./Archer C20 v6.
Review the reported fix. Update TP-Link Systems Inc./Archer C20 v6 to EU_0.9.1 Build 260811 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 19, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.