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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://support.zabbix.com/browse/ZBX-28077 |
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History
Wed, 19 Aug 2026 05:30:00 +0000
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ssvc
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Tue, 18 Aug 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Zabbix
Zabbix zabbix |
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| Vendors & Products |
Zabbix
Zabbix zabbix |
Tue, 18 Aug 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Improper validation of custom installation directories on Windows could allow installation into locations with unsafe permissions, increasing the risk of DLL sideloading. | |
| Weaknesses | CWE-427 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Zabbix
Published:
Updated: 2026-08-19T03:55:56.294Z
Reserved: 2026-07-07T08:30:49.859Z
Link: CVE-2026-59781
Updated: 2026-08-18T12:51:54.947Z
Status : Received
Published: 2026-08-18T13:17:25.340
Modified: 2026-08-19T04:17:27.857
Link: CVE-2026-59781
No data.
OpenCVE Enrichment
Updated: 2026-08-18T14:15:07Z