UpHeron
All vulnerabilities

Servers and applications

CVE-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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 5 Oct 2023.

Severity
High 8.8
Published
27 Sept 2023
Last changed
17 Jun 2026
Added to UpHeron
3 Nov 2026
Fixed in
8.7.4, 8.8.2
Sources
NVD

Affected software

SoftwareAffected versions
WS_FTP ServerServers and applications · cpe:a:progress:ws_ftp_server
  • Every version before 8.7.4
  • From 8.8 before 8.8.2

Known exploited

CISA name
Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due for US agencies
26 Oct 2023
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-40044
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-40044