# CVE-2026-115340: Insecure Storage of Web Transfer Credentials in Progress WS_FTP Server

Status: published. Published: 2026-11-09. Updated: 2026-11-12.

Progress Software WS_FTP Server versions prior to 2025.0.5 on Windows may write sensitive user credential and session data to a temporary file during file transfer operations.

## Remediation

- workaround: Shorten the XFT session timeout where practical, and restrict the Ad Hoc Transfer endpoint to trusted networks if external access is not required. Contact Progress Software Technical Support for guidance on available mitigations. (source: CNA: ProgressSoftware)

## Affected products and versions

- Progress Software / WS_FTP Server: ≥ 0; < 2025.0.5 (affected, custom). Source: CNA: ProgressSoftware; platforms: Windows

## Severity and prioritization

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N; source: CNA: ProgressSoftware

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N; source: NVD: security@progress.com

- CISA KEV: No listing in collected sources

- EPSS: 0.08% as of 2026-11-12; percentile 0.16%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-312, CWE-522

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://community.progress.com/s/article/WS-FTP-Server-Service-Pack-November-2026 (CNA: ProgressSoftware; vendor-advisory)

- https://community.progress.com/s/article/WS-FTP-Server-Service-Pack-November-2026 (security@progress.com)

## Provenance

- CNA: ProgressSoftware: https://www.cve.org/CVERecord?id=CVE-2026-115340; retrieved 2026-11-12; source updated 2026-11-12

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-115340; retrieved 2026-11-12; source updated 2026-11-12

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-115340; retrieved 2026-11-12; source updated Not reported

Revision: 3b4a9fc74ff16ff9e53b2deae5bc6bd63f0917170c54e7b5510e3d8101ef57ef

Canonical: https://y2.dev/cve/CVE-2026-115340

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