CVE-2021-34202: D-Link Dir-2640-Us Firmware

High severity, CVSS 7.8. EPSS: 3.6% chance of exploitation in the next 30 days.

There are multiple out-of-bounds vulnerabilities in some processes of D-Link AC2600(DIR-2640) 1.01B04. Ordinary permissions can be elevated to administrator permissions, resulting in local arbitrary code execution. An attacker can combine other vulnerabilities to further achieve the purpose of remote code execution.

Affected products

• D-Link Dir-2640-Us Firmware: version 1.01b04 only

Published 2021-06-16. Last modified 2026-07-09.