CVE-2021-34202

Name: CVE-2021-34202
Creator: NVD / NIST
Published: 2021-06-16T19:15:39.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 4.37%

Last modified Jun 17, 2026

CVE-2021-34202 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 4.37% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

4.37%

90.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Dlink	Dir-2640-Us Firmware	1.01b04

References

http://d-link.comVendor Advisory
http://dir-2640-us.comBroken Link, URL Repurposed
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34202Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
http://d-link.comVendor Advisory
http://dir-2640-us.comBroken Link, URL Repurposed
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34202Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Jun 16, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34202?

How severe is CVE-2021-34202?

CVE-2021-34202 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 4.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34202?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34202?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST