Vulnerability Description
D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this function uses the original default password and port. An attacker can easily use telnet to log in, modify routing information, monitor the traffic of all devices under the router, hijack DNS and phishing attacks. In addition, this interface is likely to be questioned by customers as a backdoor, because the interface should not be exposed.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dlink | Dir-2640-Us Firmware | 1.01b04 |
| Dlink | Dir-2640-Us | - |
Related Weaknesses (CWE)
References
- http://d-link.comVendor Advisory
- http://dir-2640-us.comBroken LinkURL Repurposed
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203ExploitThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
- http://d-link.comVendor Advisory
- http://dir-2640-us.comBroken LinkURL Repurposed
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203ExploitThird Party Advisory
- https://www.dlink.com/en/security-bulletin/Vendor Advisory
FAQ
What is CVE-2021-34203?
CVE-2021-34203 is a vulnerability with a CVSS score of 8.1 (HIGH). D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this functi...
How severe is CVE-2021-34203?
CVE-2021-34203 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34203?
Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dir-2640-Us Firmware, Dlink Dir-2640-Us.