rxerium/CVE-2025-57819

GitHubRepository PoCWriteup

PoC files

3 files

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GitHub
Analysisdeepseek-v4-pro:cloud ·

Technical assessment

The artifact is a README.md file describing a Nuclei template for detecting vulnerable FreePBX versions related to CVE-2025-57819. It explains the vulnerability, how the detection method works, and provides usage instructions, but does not contain any exploit or scanner code itself.

Backdoor review

No backdoor observed in reviewed code

The supplied evidence consists solely of a README.md file describing a Nuclei template for detecting vulnerable FreePBX versions. No executable code, scripts, or configuration files are present in the reviewed text. The README contains only documentation, references, and social sharing links, with no concealed or deceptive behavior.

ClassificationWriteup
Model confidence95%
AuthenticationNot required
LanguagesMarkdown
Target softwareFreePBX
Attack typesAuthentication BypassSQL InjectionRemote Code Execution
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The artifact is a README.md file that provides a technical overview of CVE-2025-57819 and describes a detection method using a Nuclei template. It does not contain any executable code, exploit, or scanner script; the actual template file is not included in the evidence. Therefore, it is classified as a writeup.

README.md:1-47

Requirements

  • The FreePBX Administrator UI must be exposed to the network.README.md:6

Observed behavior

  • The document describes a detection method that sends a request to the FreePBX admin panel, extracts the version, and flags it as vulnerable if it falls within affected version ranges.README.md:11
Safety-review evidence

Behaviors behind the backdoor verdict

Observables

Documentation Only
README.md describes a detection template for CVE-2025-57819The artifact contains no PoC code or executable payload; only a description of a version-checking template.README.md:1-47
Review boundaries

What the analysis did not establish

  • The evidence packet includes only the README.md file. The actual Nuclei template (template.yaml) and any other files are not provided, so the detection logic cannot be analyzed directly.
  • The analysis is based solely on the textual description in the README; no code was executed or inspected.
  • Two additional files (template.yaml and possibly another) were omitted from the text evidence; their contents are unknown.
  • Binary files were flagged but not analyzed; none were reported in the packet.
Model interpretation

This review is limited to the supplied PoC code and context. It does not assert that the code works or is safe to execute.

Linked vulnerabilities

1