Answer in brief
CVE-2023-40044 records a High severity vulnerability in WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability. The current sources mark it as known exploited. The current feed maps Progress Software Corporation/WS_FTP Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-40044 records a High severity vulnerability in WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability. The current sources mark it as known exploited. The current feed maps Progress Software Corporation/WS_FTP Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Progress Software Corporation/WS_FTP Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Progress Software Corporation/WS_FTP Servergeneric | >=8.8.0 <8.8.2 || >=8.7.0 <8.7.4 | 8.8.2, 8.7.4 |
Published upstream
Sep 27, 2023
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Oct 5, 2023
Evidence: source:kev:kev:kev:recordIn 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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Progress Software Corporation/WS_FTP Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Progress Software Corporation/WS_FTP Servergeneric | >=8.8.0 <8.8.2 || >=8.7.0 <8.7.4 | 8.8.2, 8.7.4 |
Published upstream
Sep 27, 2023
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Oct 5, 2023
Evidence: source:kev:kev:kev:recordIn 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.
Quoted source text, attributed separately from HOL analysis.