Progress WS_FTP Server CVE-2026-90866 路徑遍歷漏洞可被主機管理員利用
CVE-2026-90866 - Virtual Folder Path Confinement Bypass in Progress WS_FTP Server
Progress Software 的 WS_FTP Server 2024.0.7 與 2025.0.4 之前版本存在 CVE-2026-90866 路徑遍歷漏洞，允許授權外的主機管理員存取未授權位置，可能導致遠端程式執行。
此漏洞允許授權外的主機管理員存取未授權位置，提醒使用者即時升級以防止遠端執行程式，並且建議限制主機管理員許可權以降低風險。
A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access locations outside their authorized scope, potentially enabling remote code execution.
Impact
Affected Products
The following products are affected by CVE-2026-90866
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Progress | ws_ftp_server |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | f9fea0b6-671e-4eea-8fde-31911902ae05 | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Update WS_FTP Server to the latest version to fix path traversal and RCE.
- Update WS_FTP Server to version 2024.0.7 or 2025.0.4.
- Apply vendor patches for affected versions.
- Restrict Host Administrator privileges.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-90866 vulnerability anywhere in the article.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.