CVE-2026-59781

When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could later be loaded by the application, resulting in DLL sideloading. The installer has been hardened to detect potentially unsafe installation directories and now requires explicit user confirmation before proceeding with installation in such locations. This reduces the risk of accidental installation into directories with inappropriate permissions while preserving compatibility with existing deployment scenarios.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.zabbix.com/browse/ZBX-28077	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::

History

23 Sep 2026, 15:42

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8
CPE		cpe:2.3:a:zabbix:zabbix::::::::
First Time		Zabbix zabbix Zabbix
References	~~() https://support.zabbix.com/browse/ZBX-28077 -~~	() https://support.zabbix.com/browse/ZBX-28077 - Vendor Advisory

Information

Published : 2026-08-18 13:17

Updated : 2026-09-23 15:42

NVD link : CVE-2026-59781

Mitre link : CVE-2026-59781

CVE.ORG link : CVE-2026-59781

JSON object : View

Products Affected

zabbix

zabbix

CWE

CWE-427

Uncontrolled Search Path Element

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