# TP-Link Archer AX21: AX-21 Command Injection (CVE-2023-1389) · pwn.watch

> TP-Link Archer AX-21 contains a command injection vulnerability that allows for remote code execution. Added to CISA KEV on 2023-05-01.

Page: https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389 · generated 2026-10-22T20:15:47.501Z

## Status
- Severity: high · status: closed · patch: patched
- Product: TP-Link Archer AX21
- Started: 2023-05-01 · closed: 2023-05-01
- CVEs: CVE-2023-1389
- Affected: See vendor advisory / CISA notes (versions not always listed in KEV feed)
- Fixed in: See vendor advisory linked in sources

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389/feed.xml
- JSON Feed: https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389.json
- This file: https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389/llms.txt

## Updates (newest first)
- 2023-05-01: CISA added CVE-2023-1389 to the KEV catalog (due 2023-05-22).

## Fix brief
# Security brief: TP-Link Archer AX21: AX-21 Command Injection (CVE-2023-1389)

Source: https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389 · status: closed (closed May 1, 2023) · severity: high · updated May 1, 2023

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
TP-Link Archer AX-21 contains a command injection vulnerability that allows for remote code execution. Added to CISA KEV on 2023-05-01.

Severity detail: CVSS 8.8 (NVD), actively exploited (CISA KEV)

- Product: TP-Link Archer AX21
- CVE / advisory ids: CVE-2023-1389

## Affected versions
- See vendor advisory / CISA notes (versions not always listed in KEV feed)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- See vendor advisory linked in sources

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Latest updates
- May 1, 2023: CISA added CVE-2023-1389 to the KEV catalog (due 2023-05-22).

## Advisories
- [Vendor advisory: TP-Link Archer AX21](https://www.tp-link.com/us/support/download/archer-ax21/v3/#Firmware) (TP-Link)
- [NVD: CVE-2023-1389](https://nvd.nist.gov/vuln/detail/CVE-2023-1389) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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Machine-readable: https://pwn.watch/i/tp-link-archer-ax21-cve-2023-1389.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.