What’s Vulnerable › Vulnerabilities

CVE-2021-34204

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-16 · updated 2026-07-09
• Weakness: CWE-522

Description

D-Link DIR-2640-US 1.01B04 is affected by Insufficiently Protected Credentials. D-Link AC2600(DIR-2640) stores the device system account password in plain text. It does not use linux user management. In addition, the passwords of all devices are the same, and they cannot be modified by normal users. An attacker can easily log in to the target router through the serial port and obtain root privileges.

Affected products

• Quagga Services on D-Link DIR-2640 Routers: 1.01b04

References

• https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34204
• https://www.dlink.com/en/security-bulletin/
• https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34204
• https://www.dlink.com/en/security-bulletin/

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