CVE-2026-90863 Progress Software WS_FTP Server - Broken Access Control

Progress Software WS_FTP Server < 2024.0.7 and < 2025.0.4 on Windows contains a broken access control caused by missing authorization in the administrative interface, letting delegated Host Administrators execute arbitrary commands with elevated privileges, exploit requires delegated Host Administrator access.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.66% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Remote Code Execution, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-862

Vendor fix

Upgrade to versions 2024.0.7 or 2025.0.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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