CVE-2021-21819

7.2 highEPSS 2.9%

High (7.2) in dlink dir-3040 firmware. EPSS 2.9% chance of exploitation in the next 30 days.

A code execution vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger this vulnerability.

Severity

CVSS 3.1

7.2 high

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

EPSS: 2.9% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2021-07-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dlink:dir-3040_firmware

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1284
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1284

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