# CVE-2026-115338: Insecure XFT Transport in Progress WS_FTP Server

Status: published. Published: 2026-11-09. Updated: 2026-11-10.

Insufficient protection of communications in Progress WS_FTP Server versions prior to 2025.0.5 could allow a network attacker to intercept sensitive information or modify requests when unencrypted connections are used.

## Remediation

- workaround: Disable HTTP access to the XFT service and configure clients to use HTTPS only. Invalidate active sessions and rotate credentials known to have been transmitted over HTTP. (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: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: ProgressSoftware

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: security@progress.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

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

- Weaknesses: CWE-319, CWE-345

## 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-2026-115338; retrieved 2026-11-10; source updated 2026-11-10

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-115338; retrieved 2026-11-10; source updated 2026-11-10

Revision: f1707f3cf6b8938d16c5c6b593017a393942fa5b9caf0de48c401a1e637c8ef9

Canonical: https://y2.dev/cve/CVE-2026-115338

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