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Exploited vulnerability · CISA KEV

Is CVE-2023-1389 exploited? Yes: in CISA KEV since 1 May 2023

Gociux · TP-Link Archer AX21 · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-1389, TP-Link Archer AX-21 Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 1 May 2023, 47 days after it was published. It affects TP-Link Archer AX21. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 1 May 2023
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due22 May 2023BOD 22-01 deadline

What it is

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

VendorTP-Link (6 exploited CVEs in KEV)
ProductArcher AX21
VulnerabilityTP-Link Archer AX-21 Command Injection Vulnerability
WeaknessCWE-77
Published15 Mar 2023
Added to KEV1 May 2023
Reported by (CNA)tenable

What to do

  1. Check whether you run it. Look for Archer AX21 in your asset inventory, including appliances and cloud images. Stack check lists every exploited TP-Link CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Mar 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for TP-Link.

References

Questions

Is CVE-2023-1389 being exploited?

Yes. CISA added CVE-2023-1389 to the Known Exploited Vulnerabilities catalog on 1 May 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-1389 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2023-1389?

Apply updates per vendor instructions. Check TP-Link's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Archer AX21 and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2023 · TP-Link scorecard · act-now radar.

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