CVE-2021-34202

7.8 highEPSS 3.6%

High (7.8) in dlink dir-2640-us firmware. 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.

Severity

CVSS 3.1

7.8 high

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

EPSS: 3.6% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-11-01)
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-2021-34202
https://www.dlink.com/en/security-bulletin/
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34202
https://www.dlink.com/en/security-bulletin/

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