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No exploitation reported

CVE-2021-34202

No exploitation reported by the sources we read.

  • Published2021-06-16
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-06-1619:15CVE publishedNVD

Versions per branch

NVD
Dlink dir-2640-us firmwareversion to verify
BranchAffectedFixed in
1.1= 1.01b04no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2021-06-16
Last Modified
2026-07-09
NVD status
Modified
GitHub Advisory
GHSA-rm56-645j-pf84

Frequently asked questions

What is CVE-2021-34202?

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.

Is CVE-2021-34202 actively exploited?

Active exploitation of CVE-2021-34202 has not been confirmed. Its EPSS score was 3.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-34202?

CVE-2021-34202 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record