CVE-2021-21805 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Advantech	R-Seenet	2.4.12

Related Weaknesses (CWE)

CWE-78

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1274ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1274ExploitThird Party Advisory

FAQ

What is CVE-2021-21805?

CVE-2021-21805 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 executi...

How severe is CVE-2021-21805?

CVE-2021-21805 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-21805?

Check the references section above for vendor advisories and patch information. Affected products include: Advantech R-Seenet.