CVE-2026-75616
Command Injection in Router Web Management Interface
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.
INFO
Published Date :
Aug. 19, 2026, 9:17 p.m.
Last Modified :
Aug. 19, 2026, 9:17 p.m.
Remotely Exploit :
No
Source :
f23511db-6c3e-4e32-a477-6aa17d310630
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | f23511db-6c3e-4e32-a477-6aa17d310630 | ||||
| CVSS 4.0 | HIGH | f23511db-6c3e-4e32-a477-6aa17d310630 |
Solution
- Update Archer C20 v6 firmware to the latest version.
- Apply security patches provided by the vendor.
- Restrict access to the web management interface.
- Validate all user inputs on the management interface.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-75616.
| URL | Resource |
|---|---|
| https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware | |
| https://www.tp-link.com/en/support/faq/5252/ | |
| https://www.tp-link.com/us/support/download/archer-c20/v6.46/#Firmware |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-75616 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-75616
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-75616 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-75616 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by f23511db-6c3e-4e32-a477-6aa17d310630
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'TP-Link Systems Inc.', 'product': 'Archer C20 v6', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': 'EU_0.9.1 Build 260811', 'versionType': 'custom'}, {'status': 'affected', 'version': '0', 'lessThan': 'US_0.9.1 Build 260812', 'versionType': 'custom'}, {'status': 'affected', 'version': '0', 'lessThan': 'RU_0.9.1 Build 260812', 'versionType': 'custom'}], 'platforms': ['Linux'], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-78 Added Reference https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware Added Reference https://www.tp-link.com/en/support/faq/5252/ Added Reference https://www.tp-link.com/us/support/download/archer-c20/v6.46/#Firmware