CRITICAL

CVE-2021-21805

CVSS v3

9.8

CRITICAL

EPSS Score

90.9%

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

An OS Command Injection vulnerability exists in the ping.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary OS command execution. An attacker can send a crafted HTTP request to trigger this vulnerability.

Technical details

Published
8/5/2021

Frequently asked questions

What is CVE-2021-21805?

An OS Command Injection vulnerability exists in the ping.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary OS command execution. An attacker can send a crafted HTTP request to trigger this vulnerability.

Is CVE-2021-21805 actively exploited?

Active exploitation of CVE-2021-21805 has not been confirmed. The EPSS score is 90.9%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21805?

CVE-2021-21805 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2021-21805 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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