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
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The affected software is the web management firmware on certain TP-Link home Wi-Fi routers (TL-WR940N, TL-WR841N, and TL-WR740N models). An attacker could exploit a command injection flaw in the wireless network configuration page to run arbitrary commands on the affected device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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 .
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a n/a
Version range not reported
References 3
GitHub · a101e-IoTvul/iotvul
Questions about CVE-2023-33538
What does this mean?
A flaw in the router's web management component lets a specially crafted request run arbitrary system commands on the device, and it can also cause denial of service. The trigger is a GET request to /userRpm/WlanNetworkRpm with a crafted ssid1 parameter.Source: web.archive.org
Am I affected, and how do I check?
The advisory names the TP-Link TL-WR940N V2/V4 and also the TL-WR841N V8/V10. To check a device, read the model and hardware version on its label or in its admin interface, and see whether its web management interface is reachable. The facts do not list fixed firmware versions.Source: web.archive.org
What should I do about it?
The available facts do not include a fixed firmware version or an upgrade target. Check the TP-Link support page for the model for a firmware update that addresses this issue.Source: web.archive.org
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-06-16, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
The available facts do not include a workaround. Until a fix is confirmed, check the vendor's advisory for any interim guidance for this model.Source: web.archive.org