Unauthenticated XFT Memory Exhaustion in Progress WS_FTP Server

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-115339
StatePUBLISHED
AssignerProgressSoftware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-09 17:17:11 UTC
Updated2026-11-09 17:17:11 UTC
DescriptionInsufficient resource limits in Progress Software WS_FTP Server releases prior to 2025.0.5 on Windows could allow an unauthenticated remote attacker to cause denial of service.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-770 | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Progress Software WS FTP Server affected 2025.0.5 custom Windows

References

ReferenceSourceLinkTags
community.progress.com/s/article/WS-FTP-Server-Service-Pack-November-2026 [email protected] community.progress.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Niv Levy (restricted) (en)

Additional Advisory Data

Workarounds

CNA: Reduce XFT service message-size and array-size limits to the minimum required for normal transfers. Contact Progress Software Technical Support for guidance on configuring these limits.

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