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CRITICAL

CVE-2021-26747

CVSS v3

9.8

CRITICAL

EPSS Score

54.8 %

exploit probability, as of 2026-10-05

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.

Technical details

Published
2021-02-18

Frequently asked questions

What is CVE-2021-26747?

Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.

Is CVE-2021-26747 actively exploited?

Active exploitation of CVE-2021-26747 has not been confirmed. Its EPSS score was 54.8% on 2026-10-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26747?

CVE-2021-26747 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2021-26747 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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