CVE-2023-33538
TP-Link Multiple Routers Command Injection Vulnerability
TP-Link Multiple Routers
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 .
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 16 June 2025. US federal agencies were required to remediate it by 7 July 2025.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 41.6%, which is higher than 98.7% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2023-33538 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-33538.
What does CVE-2023-33538 affect?
CVE-2023-33538 affects TP-Link Multiple Routers. 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 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 41.6%, higher than 98.7% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 7 July 2025.
How should organisations respond to CVE-2023-33538?
Apply the vendor patch for TP-Link Multiple Routers as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.