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Exploited vulnerability · CISA KEV

Is CVE-2023-33538 exploited? Yes: in CISA KEV since 16 Jun 2025

Gociux · TP-Link Multiple Routers · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-33538, TP-Link Multiple Routers Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 16 Jun 2025, 740 days after it was published. It affects TP-Link Multiple Routers. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 16 Jun 2025
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity8.8CVSS 3.1 · high
US federal due7 Jul 2025BOD 22-01 deadline

What it is

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

VendorTP-Link (6 exploited CVEs in KEV)
ProductMultiple Routers
VulnerabilityTP-Link Multiple Routers Command Injection Vulnerability
WeaknessCWE-77
Published7 Jun 2023
Added to KEV16 Jun 2025
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Multiple Routers in your asset inventory, including appliances and cloud images. Stack check lists every exploited TP-Link CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  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 7 Jun 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for TP-Link.

Other exploited CVEs in Multiple Routers

References

Questions

Is CVE-2023-33538 being exploited?

Yes. CISA added CVE-2023-33538 to the Known Exploited Vulnerabilities catalog on 16 Jun 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-33538 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-2023-33538?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check TP-Link's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Multiple Routers 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 June 2025 · TP-Link scorecard · act-now radar.

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