CVE-2026-90861— Password Disclosure via Activity Logs Enabling Administrator Privilege Escalation in WS_FTP Server

Quick assessment

Affected

Progress Software WS_FTP Server

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Windows 系统上运行的 Progress Software WS_FTP Server 2024.0.7 和 2025.0.4 之前的版本中，用户的密码可能以明文形式暴露给其他管理员，攻击者可利用该密码获取更广泛的服务器管理权限。

CVSS 6.6 · Medium Updated Oct 30, 2026

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1110 · Brute Force

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Vulnerability Information

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Vulnerability Title

Password Disclosure via Activity Logs Enabling Administrator Privilege Escalation in WS_FTP Server

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

通过日志文件的信息暴露

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Progress Software	WS_FTP Server	0 ~ 2024.0.7	-

II. Public POCs for CVE-2026-90861

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

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III. Intelligence Information for CVE-2026-90861

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Other References for CVE-2026-90861 (1)

https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-90861

Same Patch Batch · Progress Software · 2026-10-29 · 15 CVEs total

CVE-2026-84295	10.0 CRITICAL	Improper Authentication in Progress WS_FTP Server
CVE-2026-90868	9.9 CRITICAL	OS Command Injection in Progress WS_FTP Server
CVE-2026-90863	9.1 CRITICAL	Privilege Escalation via Missing Authorization in WS_FTP Manager
CVE-2026-90864	9.1 CRITICAL	Host Administrator Path Containment Bypass in Progress WS_FTP Server
CVE-2026-90866	9.1 CRITICAL	Virtual Folder Path Confinement Bypass in Progress WS_FTP Server
CVE-2026-90865	9.0 CRITICAL	Command Injection via FTP Notification Variables in Progress WS_FTP Server
CVE-2026-90867	8.1 HIGH	Improper Access Control of Web Admin Console in Progress WS_FTP Server
CVE-2026-84294	7.7 HIGH	Information Disclosure in Ad Hoc Transfer in Progress WS_FTP Server
CVE-2026-90869	7.5 HIGH	Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS
CVE-2026-84296	6.8 MEDIUM	SSH Multi-Factor Authentication Bypass in Progress WS_FTP Server
CVE-2026-90872	6.6 MEDIUM	Server-Side Script Injection in Manager Web UI in Progress WS_FTP Server
CVE-2026-90870	5.3 MEDIUM	Unauthenticated Ad Hoc Transfer Resource Exhaustion in Progress WS_FTP Server
CVE-2026-90871	5.3 MEDIUM	Path Traversal Leading to File Deletion in Ad Hoc Transfer and Web Transfer in Progress WS
CVE-2026-90862	4.3 MEDIUM	Web Transfer Module Multi-Factor Authentication Bypass in Progress WS_FTP Server

IV. Related Vulnerabilities

Same product: WS_FTP Server

Same vendor: Progress Software

Same weakness: CWE-532