CVE-2021-34201

7.1 highEPSS 0.5%

High (7.1) in dlink dir-2640-us firmware. 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.

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2021-06-16
Modified: 2026-07-09
Record from: the NVD, synced 2026-10-19

Affected

dlink:dir-2640-us_firmware

References

https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34201
https://www.dlink.com/en/security-bulletin/
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34201
https://www.dlink.com/en/security-bulletin/

Check your stack JSON