Denial of Service Vulnerability in Progress Software WS_FTP Server
CVE-2026-115339

7.5HIGH

Key Information:

Vendor

Progress Software
Status
Ws Ftp Server
Vendor
CVE Published:
9 November 2026

What is CVE-2026-115339?

Insufficient resource limits in the WS_FTP Server from Progress Software prior to version 2025.0.5 on Windows can be exploited by unauthenticated remote attackers. This flaw allows malicious actors to launch denial of service attacks, potentially disrupting the availability of the server and affecting services that rely on it. Organizations using affected versions are urged to update promptly to mitigate this risk.

Affected Version(s)

WS_FTP Server Windows 0 < 2025.0.5

References

https://community.progress.com/s/article/WS-FTP-Server-Se...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Niv Levy (restricted)
.