What is CVE-2026-90861?

CVE-2026-90861 is a medium-severity vulnerability in Progress Software Ws FTP Server, classified under Insufficiently Protected Credentials. CVSS score: 6.6/10. Published 2026-10-29.

How severe is CVE-2026-90861?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Information disclosure in Progress Software Ws FTP Server

CVE-2026-90861

Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows may expose a user's password in clear text to another administrator, who could use it to gain broader administrative access to the server.

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Progress Software Ws FTP Server

Weakness classification (CWE)

References

progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view (vendor-advisory)

Frequently asked questions

What is CVE-2026-90861?: CVE-2026-90861 is a medium-severity vulnerability in Progress Software Ws FTP Server, classified under Insufficiently Protected Credentials. CVSS score: 6.6/10. Published 2026-10-29.
How severe is CVE-2026-90861?: Medium severity. CVSS v3 base score is 6.6 out of 10.