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CVE-2026-65939— WhatsUp Gold versions prior to 26.0.2 contain an arbitrary file write vulnerability in the LogToFile action handler.

Quick assessment

Affected
Progress Software Corporation WhatsUp Gold
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.

Progress WhatsUp Gold是Progress公司的一款网络监控软件。 Progress WhatsUp Gold 2026.0.2之前版本存在安全漏洞，该漏洞源于特权攻击者可以在IIS web根目录中创建LogToFile操作并指定任意文件扩展名。

CVSS 6.8 · Medium EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software Corporation WhatsUp Gold < 26.0.2 affected
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I. Basic Information for CVE-2026-65939

Vulnerability Information
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Vulnerability Title
WhatsUp Gold versions prior to 26.0.2 contain an arbitrary file write vulnerability in the LogToFile action handler.
Source: CVE Program / CVE List V5
Vulnerability Description
In WhatsUp Gold versions released before 2026.0.2, a privileged attacker can create a LogToFile action specifying an arbitrary file extension within the IIS web root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Progress WhatsUp Gold 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Progress WhatsUp Gold是Progress公司的一款网络监控软件。 Progress WhatsUp Gold 2026.0.2之前版本存在安全漏洞，该漏洞源于特权攻击者可以在IIS web根目录中创建LogToFile操作并指定任意文件扩展名。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software Corporation WhatsUp Gold 0 ~ 26.0.2 -

II. Public POCs for CVE-2026-65939

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III. Intelligence Information for CVE-2026-65939

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Vendor Advisories for CVE-2026-65939 (1)

Vendor Pages for CVE-2026-65939 (1)

Same Patch Batch · Progress Software Corporation · 2026-08-12 · 5 CVEs total

CVE-2026-65941 8.8 HIGH WhatsUp Gold versions prior to 26.0.2 contain an unauthenticated remote code execution vul
CVE-2026-65937 8.0 HIGH WhatsUp Gold versions prior to 26.0.2 contain multiple stored cross-site scripting (XSS) v
CVE-2026-65940 6.8 MEDIUM WhatsUp Gold versions prior to 26.0.2 excessive file system permissions allows a privilege
CVE-2026-65938 4.3 MEDIUM WhatsUp Gold versions prior to 26.0.2 contain an improper authorization vulnerability in t

IV. Related Vulnerabilities

Same product: WhatsUp Gold
Same vendor: Progress Software Corporation
Same weakness: CWE-434

V. Comments for CVE-2026-65939

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