Vulnerability Intelligence Report
WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability
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.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:90.15%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-502 ↗CWE-502 Deserialization of Untrusted Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Progress Software Corporation | WS_FTP Server | 8.8.0 < 8.8.2 (affected), 8.7.0 < 8.7.4 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
90.150%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Progress Software Corporation · Vendor · USA |
| Reserved | 2023-08-08T19:44:41 |
| Published | 2023-09-27T14:48:08 |
| Patch Date | 2023-09-27 |
| Last Updated | 2025-10-21T23:05:36 |
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