Vulnerability Details CVE-2021-34203
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.6%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 4.8
References
- http://d-link.com
- http://dir-2640-us.com
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203
- https://www.dlink.com/en/security-bulletin/
- http://d-link.com
- http://dir-2640-us.com
- https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34203
- https://www.dlink.com/en/security-bulletin/
Products affected by CVE-2021-34203
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cpe:2.3:h:dlink:dir-2640-us:-
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cpe:2.3:o:dlink:dir-2640-us_firmware:1.01b04