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Case File

CVE-2021-21804

CRITICAL · CVSS 9.8 EPSS 3.71% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-16 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-21804
Severity
CRITICAL
CVSS
9.8
EPSS
3.71%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)