CVE-2023-33538

Name: CVE-2023-33538
Creator: NVD / NIST
Published: 2023-06-07T04:15:10.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 42.57%

Last modified Jun 17, 2026

CVE-2023-33538 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 .. CISA has confirmed active exploitation in the wild. EPSS estimates a 42.57% chance of exploitation in the next 30 days.

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 .

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

42.57%

98.5th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jul 7, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-Wr940n Firmware	All versions
Tp-Link	Tl-Wr841n Firmware	All versions
Tp-Link	Tl-Wr740n Firmware	All versions

References

https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.mdBroken Link, Exploit, Third Party Advisory
https://web.archive.org/web/20230609111043/https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.mdExploit, Third Party Advisory
https://www.secpod.com/blog/cisa-issues-warning-on-active-exploitation-of-tp-link-vulnerability-cve-2023-33538/Third Party Advisory
https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.mdBroken Link, Exploit, Third Party Advisory
https://web.archive.org/web/20230609111043/https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.mdExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33538US Government Resource
https://www.tp-link.com/us/support/faq/3562/Product

Timeline

Published: Jun 7, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-33538?

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 .

How severe is CVE-2023-33538?

CVE-2023-33538 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 42.57% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-33538?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-33538?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST