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CVE-2023-1389

TP-Link Archer AX-21 Command Injection

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 100.0%
  1. Published15 Mar 2023
  2. Added to CISA KEV1 May 2023
  3. Remediation due22 May 2023
Actively exploited (CISA KEV)

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

Added to KEV: 1 May 2023Federal remediation due: 22 May 2023

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.

CVSS 3.1 breakdown

Attack vectorAdjacent
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

TP-Link Archer Ax21 Firmware< 1.1.4

Remediation

Fixed in
TP-Link Archer Ax21 Firmware≥ 1.1.4

References

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Frequently asked

Is CVE-2023-1389 being actively exploited?

Yes. CVE-2023-1389 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 1 May 2023.

How severe is CVE-2023-1389?

CVE-2023-1389 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2023-1389?

Affected products include TP-Link Archer Ax21 Firmware.

How do I fix CVE-2023-1389?

Upgrade affected software to a fixed version, for example TP-Link Archer Ax21 Firmware 1.1.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-1389 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.