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Findings

CVE-2023-40044

Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

Published Sep 27, 2023 · updated Jun 16, 2026 · progress ws ftp server

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 27, 2023 · Catalog

    Detected

    In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

  2. Oct 5, 2023 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Oct 26, 2023 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date Oct 26, 2023

Affected

  • cpe progress/ws ftp serverversion unspecified
  • vendor Progress WS_FTP Serverversion unspecified

Sources

  • AttackerKBhttps://attackerkb.com/topics/bn32f9sNax/cve-2023-40044

    AttackerKB link already published on the finding.

    attackerkb.com
  • CISA KEVCVE-2023-40044

    Progress WS_FTP Server contains a deserialization of untrusted data vulnerability in the Ad Hoc Transfer module that allows an authenticated attacker to execute remote commands on the underlying operating system.

    cisa.gov
  • CVE.orgCVE-2023-40044

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2023-40044

    30-day exploitation probability 90.4%

    first.org
  • Metasploit Modulesexploit_windows/http/ws_ftp_rce_cve_2023_40044

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2023-40044

    In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References