CVE-2023-33538

What the flaw 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.

Description as published by CISA. We have not independently reproduced it.

What CISA requires

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.

Public exploit code

8 public repositories referencing this CVE have been catalogued on GitHub. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.

• PuddinCat/GithubRepoSpider
• d4n-sec/d4n-sec.github.io
• explxx/CVE-2023-33538
• mrowkoob/CVE-2023-33538-msf
• packetinside/CISA_BOT
• plzheheplztrying/cve_monitor
• ums91/CISA_BOT
• zulloper/cve-poc

Vendor advisories

• www.tp-link.com/nordic/support/faq/3562/
• nvd.nist.gov/vuln/detail/CVE-2023-33538

Primary sources

• NVD entry — CVSS score, CPE list and references
• CISA KEV catalog — the source for this page
• CVE Record at cve.org