Vulnerability Description
A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tp-Link | Tl-Mr6400 Firmware | < 1.9.0 |
| Tp-Link | Tl-Mr6400 | 5.3 |
Related Weaknesses (CWE)
References
- https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#FirmwareProduct
- https://www.tp-link.com/us/support/faq/5016/Vendor Advisory
FAQ
What is CVE-2026-3841?
CVE-2026-3841 is a vulnerability with a CVSS score of 8.8 (HIGH). A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during ...
How severe is CVE-2026-3841?
CVE-2026-3841 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3841?
Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Tl-Mr6400 Firmware, Tp-Link Tl-Mr6400.