CVE-2023-33538
Published 2023-06-07 · Updated 2026-06-17 · Source cve@mitre.org
Summary
CVE-2023-33538 is a high-severity (CVSS 8.8) vulnerability in TP-Link Multiple Routers. CISA added it to the Known Exploited Vulnerabilities catalog on June 16, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by July 7, 2025. CISA does not currently list it as used in ransomware campaigns. TP-Link has 6 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 6 known-exploited TP-Link vulnerabilities →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 vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: TP-Link — Multiple Routers
Name: TP-Link Multiple Routers Command Injection Vulnerability
Date added: 2025-06-16 · Due: 2025-07-07
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
References
- https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md
- 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.md
- https://www.secpod.com/blog/cisa-issues-warning-on-active-exploitation-of-tp-link-vulnerability-cve-2023-33538/
- https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md
- 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.md
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33538
- https://www.tp-link.com/us/support/faq/3562/