Improper access control in WhatsUp Gold - CVE-2026-65939
Published: August 13, 2026
Vulnerability identifier: #VU142301
CSH Severity: Medium
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-65939
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to write arbitrary files.
The vulnerability exists due to improper access control in the LogToFile action handler when handling file write operations. A remote user can invoke the affected action handler to write arbitrary files.
Affected software
WhatsUp Gold
How to mitigate CVE-2026-65939
Install security update from vendor's website.
WhatsUp Gold - update to 2026.0.2