CVE intelligence and bounded remediation

CVE-2024-40519 — SeaCMS 12.9 has a remote code execution vulnerability

High CVSS 8.8

SeaCMS 12.9 has a remote code execution vulnerability. The vulnerability is caused by admin_smtp.php directly splicing and writing the user input data into weixin.php without processing it, which allows authenticated attackers to exploit the vulnerability to execute arbitrary commands and obtain system permissions.

Severity
High
CVSS
8.8 (3.1)
Published
2024-07-12
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • seacms / seacms / 12.9

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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