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Findings

CVE-2025-54309

CrushFTP Unprotected Alternate Channel Vulnerability

Published Jul 18, 2025 · updated Jun 17, 2026 · crushftp crushftp

CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 18, 2025 · Catalog

    Detected

    CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

  2. Jul 22, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Aug 12, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date Aug 12, 2025

Affected

  • cpe crushftp/crushftpversion unspecified
  • vendor CrushFTP CrushFTPversion unspecified

Sources

  • CISA KEVCVE-2025-54309

    CrushFTP contains an unprotected alternate channel vulnerability. When the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS.

    cisa.gov
  • CVE.orgCVE-2025-54309

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2025-54309

    30-day exploitation probability 95.1%

    first.org
  • NIST NVDCVE-2025-54309

    CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

    nvd.nist.gov

References