VulnerabilityAnalyzed
CVE-2023-33538
TP-Link Multiple Routers Command Injection Vulnerability
KEVHIGH 8.8EPSS 41.9%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 7 July 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 41.87% probability · 99th percentile
- CISA KEV
- Listed 16 June 2025 · due 7 July 2025
- Weakness
- CWE-77
- Affected
- tp-link/tl-wr940n firmware · tp-link/tl-wr841n firmware · tp-link/tl-wr740n firmware
- Source
- cve@mitre.org
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.tp-link.com/nordic/support/faq/3562/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-33538
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.