AUGUST 4, 2026
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Case File

CVE-2021-39426

CRITICAL · CVSS 9.8 EPSS 0.88% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-12-15 · 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.

GitHub PoC Links

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

CVE
CVE-2021-39426
Severity
CRITICAL
CVSS
9.8
EPSS
0.88%

Original NVD Description

An issue was discovered in /Upload/admin/admin_notify.php in Seacms 11.4 allows attackers to execute arbitrary php code via the notify1 parameter when the action parameter equals set.

Related CVEs

Other vulnerabilities affecting the same vendor(s)