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Vulnerabilities

Vulnerability · CVE-2023-1389

TP-Link Archer AX-21 Command Injection Vulnerability

Published Mar 15, 2023 · catalog updated Jun 16, 2026 · TP-Link Archer AX21

Patch now

CVE-2023-1389 is in the CISA known-exploited catalog, due May 22, 2023. Confirm TP-Link Archer AX21 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
100.00%
Remediation
Remediation guidance
Affected products
cpe tp-link/archer ax21 firmware · vendor 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe tp-link/archer ax21 firmwareversion unspecified
  • vendor TP-Link Archer AX21version unspecified

How to fix CVE-2023-1389

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-1389 is in the CISA known-exploited catalog, due May 22, 2023. Confirm TP-Link Archer AX21 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-77: Command Injection. EPSS 100.00%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 15, 2023 · Catalog

    Detected

    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

  2. May 1, 2023 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 22, 2023 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-2023-1389

    TP-Link Archer AX-21 contains a command injection vulnerability that allows for remote code execution.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-1389

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-1389

    30-day exploitation probability 100.0%

    first.org
  • Exploit DatabasePublic exploit reference51677

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2023-1389

    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

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/174131/TP-Link-Archer-AX21-Command-Injection.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2023-1389

    TP-Link Archer AX-21 contains a command injection vulnerability that allows for remote code execution.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.