CVE-2021-21805

CRITICAL 9.8CVE-2021-21805 · Published 05/08/2021 · updated 17/06/2026

In short

CVE-2021-21805 is a CRITICAL (CVSS 9.8) vulnerability affecting r-seenet (advantech).
Chance of exploitation in the next 30 days (EPSS): 69.8%, higher than 99.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
r-seenet advantech	`= 2.4.12`	No fix yet

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.

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1274 · Exploit

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Package

Affected versions

Patched versions

r-seenet

advantech

= 2.4.12

No fix yet

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