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CVE-2025-34331

Status: AnalyzedHigh (8.7)—

AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 contain an unauthenticated file read vulnerability via the download.php script. The endpoint exposes a file download mechanism that lacks access control, allowing remote, unauthenticated users to request files stored on the appliance based solely on attacker-supplied path and filename parameters. While limited to specific file extensions permitted by the application logic, sensitive backup archives can be retrieved, exposing internal databases and credential hashes. Successful exploitation may lead to disclosure of administrative password hashes and other sensitive configuration data.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Acceso remoto sin autenticación a endpoint de descarga (AV:N/PR:N/UI:N) que expone archivos sensibles incluyendo hashes de credenciales y datos de configuración. CWE-306 (falta de control de acceso) confirma explotación remota T1190 con impacto en lectura de datos y potencial acceso a cuentas.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account ManagementUser Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Developer GuidanceActive Directory Configuration

Affected technologies (2)

Audiocodes — FAX ServerAudiocodes — Interactive Voice Response

CWEs

References

Raw JSON (NVD)

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