CVE-2023-1389 on CISA KEV

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 no

01What CISA says about this vulnerability

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…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• www.tenable.com — https://www.tenable.com/security/research/tra-2023-11
• packetstormsecurity.com — http://packetstormsecurity.com/files/174131/TP-Link-Archer-AX21-Command-Injectio…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / TP	Link Archer AX21 (AX1800) — All versions prior to version 1.14 Build 20230219

06Detection

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