CVE-2021-34201: D-Link Dir-2640-Us Firmware

High severity, CVSS 7.1. EPSS: 0.5% chance of exploitation in the next 30 days.

D-Link DIR-2640-US 1.01B04 is vulnerable to Buffer Overflow. There are multiple out-of-bounds vulnerabilities in some processes of D-Link AC2600(DIR-2640). Local ordinary users can overwrite the global variables in the .bss section, causing the process crashes or changes.

Affected products

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

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