CRITICAL

CVE-2021-21804

CVSS v3

9.8

CRITICAL

EPSS Score

27.8%

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

A local file inclusion (LFI) vulnerability exists in the options.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary PHP code execution. An attacker can send a crafted HTTP request to trigger this vulnerability.

Technical details

Published
7/16/2021

Frequently asked questions

What is CVE-2021-21804?

A local file inclusion (LFI) vulnerability exists in the options.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary PHP code execution. An attacker can send a crafted HTTP request to trigger this vulnerability.

Is CVE-2021-21804 actively exploited?

Active exploitation of CVE-2021-21804 has not been confirmed. The EPSS score is 27.8%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21804?

CVE-2021-21804 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2021-21804 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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