CVE-2023-1389

TP-Link Archer AX21 (AX1800)

Published 15 Mar 2023 · updated 17 Jun 2026 · Analyzed

8.8 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 1 May 2023, with a remediation deadline of 22 May 2023 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

TP-Link Archer AX21 (AX1800) firmware versions before 1.1.4 Build 20230219 contained a command injection vulnerability in the country form of the /cgi-bin/luci;stok=/locale endpoint on the web management interface. Specifically, the country parameter of the write operation was not sanitized before being used in a call to popen(), allowing an unauthenticated attacker to inject commands, which would be run as root, with a simple POST request.

References

packetstormsecurity.com/files/174131/TP-Link-Archer-AX21-Command-Injection.html · Exploit, Third Party Advisory, VDB Entry
www.tenable.com/security/research/tra-2023-11 · Exploit, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-1389 · US Government Resource