CISA KEV · Known exploitedHigh

CVE-2023-1389

TP-Link Archer AX21

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.

CVSS: 8.8
EPSS: 100.0%
CISA KEV: Listed
Published: 2023.03.16

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability100.0%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: TP-Link Archer AX21
Affected versions: All versions prior to version 1.14 Build 20230219, < 1.1.4
Fixed versions: 1.1.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2023.05.22

1
Identify
Confirm that TP-Link Archer AX21 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-77
KEV added: 2023.05.01
Ransomware use: 미확인