imbas007/auth-bypass-CVE-2025-40554

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PoC files

4 files

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Analysisdeepseek-v4-pro:cloud ·

Technical assessment

The artifact is a Nuclei template and a Python script that detect vulnerable SolarWinds Web Help Desk instances. The Nuclei template checks for version strings below 2026.1, and the Python script performs an authentication bypass check and optional login validation. Neither component executes a payload or achieves code execution; they only identify and report vulnerable targets.

Backdoor review

No backdoor observed in reviewed code

The supplied evidence consists of a Nuclei template, a README, and a requirements file for a CVE-2025-40554 authentication bypass PoC. The text files describe legitimate vulnerability detection and exploitation behavior against SolarWinds Web Help Desk. No backdoor, deceptive payload, or concealed operator-directed harm is observed in the reviewed text.

ClassificationScanner
Model confidence95%
AuthenticationNot required
LanguagesYAMLPythonMarkdown
Target softwareSolarWinds Web Help Desk
Attack typesauthentication bypass
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The Nuclei template only detects vulnerable versions via HTTP response matching and version comparison; it does not exploit the vulnerability. The Python script is described as performing a bypass and login check, but its source code is not provided, and the README indicates it saves vulnerable targets, consistent with a scanner. No exploit payload or code execution is present.

CVE-2025-40554.yaml:24-59README.md:22-46

Requirements

  • Target must be running SolarWinds Web Help Desk version below 2026.1CVE-2025-40554.yaml:59
  • Python script requires requests libraryrequirements.txt:1

Observed behavior

  • Nuclei template sends GET request to /helpdesk/WebObjects/Helpdesk.woa and extracts version from response bodyCVE-2025-40554.yaml:25-45
  • Nuclei template matches response body for Web Help Desk strings and compares version to < 2026.1CVE-2025-40554.yaml:47-59
  • Python script performs authentication bypass and optional login validation, saving vulnerable targetsREADME.md:22-46
Safety-review evidence

Behaviors behind the backdoor verdict

Observables

Exploit Script Reference
exploit_auth_bypass.pyThe README references a Python script that performs authentication bypass and optional login. The script itself is not included in the supplied text evidence, so its behavior cannot be fully verified.README.md:25
Review boundaries

What the analysis did not establish

  • Python script exploit_auth_bypass.py is not included in the evidence; its behavior is inferred from README usage examples only.
  • One file (exploit_auth_bypass.py) is omitted from the packet, limiting full analysis of the Python component.
  • The main exploit script exploit_auth_bypass.py is referenced in README.md but is not included in the supplied text evidence. Its contents are unknown.
  • One file (metadata only) was omitted from the text evidence; its content is not reviewed.
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