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TI-2023-20934 Aliases CVE-2023-40044GHSA-29vf-j74g-gmfc

WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability

Priority CRITICAL 100Exploited in the wildCWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2023-10-05CISA due date 2023-10-26Known ransomware use
EPSS 0.90355 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed WS_FTP Server (Progress Software Corporation): 8.8.2, 8.7.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ProgressWS_FTP Server8.8.0 to before 8.8.2; 8.7.0 to before 8.7.48.8.2, 8.7.4Patch availableCNA
  • WS_FTP Server VendorProgress Affected 8.8.0 to before 8.8.2; 8.7.0 to before 8.7.4 Fixed in 8.8.2, 8.7.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*before 8.7.4; 8.8 to before 8.8.2VulnerableProgress
  • cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:* Versions before 8.7.4; 8.8 to before 8.8.2 Vulnerable ·Progress

Remediation

  • Fix · CNA WS_FTP Server (Progress Software Corporation) Fixed in 8.8.2, 8.7.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Progress Software WS_FTP Server — community.progress.com/s/article/WS-FTP-Server-Critical-Vul…

    7 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2023-22761 WS_FTP Server Directory TraversalPriority MEDIUM 59
    • TI-2023-20935 WS_FTP Server Ad Hoc Transfer Module Reflected Cross-Site Scripting VulnerabilityPriority MEDIUM 40
    • TI-2023-20937 WS_FTP Server Stored Cross-Site Scripting VulnerabilityPriority LOW 38
    Show all 7 records → Advisory →

Timeline

  1. 2023-10-05 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-40044
  3. 2026-10-03 Alias added: GHSA-29vf-j74g-gmfc

References

Exploit 2

Advisory 5

Other 1

  • TI-2003-00715 Multiple buffer overflows in WS_FTP 3 and 4 allow remote authenticated users to cause a… CVSS 2.0HIGH 7.5
  • TI-2006-04675 Multiple buffer overflows in Ipswitch WS_FTP Server 5.05 before Hotfix 1 allow remote… CVSS 2.0MEDIUM 6.5
  • TI-2006-04816 Multiple buffer overflows in WS_FTP Server 5.05 before Hotfix 1, and possibly other… CVSS 2.0MEDIUM 6.5
  • TI-2001-00976 Buffer overflows in WS_FTP 2.02 allow remote attackers to execute arbitrary code via long… CVSS 2.0HIGH 7.5
  • TI-2023-22761 WS_FTP Server Directory Traversal CVSS 3.1CRITICAL 9.9
  • TI-2008-00562 Buffer overflow in Ipswitch WS_FTP Server with SSH 6.1.0.0 allows remote authenticated… CVSS 2.0HIGH 9.0
See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences