CRITICAL: CVE-2021-41653 (CVSS 9.8) — tp-link tl-wr840n firmware

CVE: CVE-2021-41653

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

• tp-link tl-wr840n firmware
• tp-link tl-wr840n

Summary

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.

Verified Sources

• NVD entry
• GitHub Advisory
• MITRE

References

• https://k4m1ll0.com/cve-2021-41653.html
• https://www.tp-link.com/us/press/security-advisory/
• http://tp-link.com
• https://k4m1ll0.com/cve-2021-41653.html
• https://www.tp-link.com/us/press/security-advisory/

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._