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CVE-2026-115339— Unauthenticated XFT Memory Exhaustion in Progress 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 平台上，Progress Software WS_FTP Server 2025.0.5 之前版本中存在资源限制不足的问题，可能导致未经身份验证的远程攻击者引发拒绝服务（DoS）。

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software WS_FTP Server < 2025.0.5 affected
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I. Basic Information for CVE-2026-115339

Vulnerability Information
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Vulnerability Title
Unauthenticated XFT Memory Exhaustion in Progress WS_FTP Server
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient resource limits in Progress Software WS_FTP Server releases prior to 2025.0.5 on Windows could allow an unauthenticated remote attacker to cause denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software WS_FTP Server 0 ~ 2025.0.5 -

II. Public POCs for CVE-2026-115339

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-115339

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Other References for CVE-2026-115339 (1)

Same Patch Batch · Progress Software · 2026-11-09 · 6 CVEs total

CVE-2026-115338 8.1 HIGH Insecure XFT Transport in Progress WS_FTP Server
CVE-2026-115341 7.7 HIGH Unauthorized File Disclosure via Path Traversal in Thin Client Web Transfer in Progress WS
CVE-2026-115340 7.1 HIGH Insecure Storage of Web Transfer Credentials in Progress WS_FTP Server
CVE-2026-115336 6.5 MEDIUM FTP Quota Accounting Bypass in Progress WS_FTP Server
CVE-2026-115337 6.3 MEDIUM Folder Permission Bypass in Progress WS_FTP Server

IV. Related Vulnerabilities

Same product: WS_FTP Server
Same vendor: Progress Software
Same weakness: CWE-770