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CVE-2023-33538

TP-Link Multiple Routers Command Injection

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 41.6%
  1. Published7 Jun 2023
  2. Added to CISA KEV16 Jun 2025
  3. Remediation due7 Jul 2025
Actively exploited (CISA KEV)

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.

Added to KEV: 16 Jun 2025Federal remediation due: 7 Jul 2025

Description

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .

CVSS 3.1 breakdown

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

Affected products

TP-Link Tl-wr740n Firmwareall versions
TP-Link Tl-wr841n Firmwareall versions
TP-Link Tl-wr940n Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-33538 being actively exploited?

Yes. CVE-2023-33538 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 16 Jun 2025.

How severe is CVE-2023-33538?

CVE-2023-33538 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 41.6% probability of exploitation.

Which products are affected by CVE-2023-33538?

Affected products include TP-Link Tl-wr740n Firmware, TP-Link Tl-wr841n Firmware, TP-Link Tl-wr940n Firmware.

How do I fix CVE-2023-33538?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-33538 against the real software inventory on every managed device, every day. 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, Secuno flags any affected asset as top-priority automatically. 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.