What’s Vulnerable › Vulnerabilities
CVE-2026-59781: Improper validation of custom installation directories on Windows could allow installation into locations with unsafe permissions, increasing the risk of DLL sideloading.
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-18 · updated 2026-09-23
- Weakness: CWE-427
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.
Affected products
- Zabbix: from 6.0.0 before 6.0.48; from 7.0.0 before 7.0.29; from 7.4.0 before 7.4.13 — fixed in 6.0.48, 7.0.29, 7.4.13
How to fix
Upgrade to a fixed version: Zabbix 6.0.48, 7.0.29, 7.4.13. Check the vendor advisory for mitigations.
References
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