AUGUST 4, 2026
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Case File

CVE-2023-53921

CRITICAL · CVSS 9.8 EPSS 0.84% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-12-17 · 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. It may be remotely exploitable.

Public Exploit Signal

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

Detected Signals
remote code execution code execution
External Security References

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

CVE
CVE-2023-53921
Severity
CRITICAL
CVSS
9.8
EPSS
0.84%

Original NVD Description

SitemagicCMS 4.4.3 contains a remote code execution vulnerability that allows attackers to upload malicious PHP files to the files/images directory. Attackers can upload a .phar file with system command execution payload to compromise the web application and execute arbitrary system commands.

Related CVEs

Other vulnerabilities affecting the same vendor(s)