CVE-2025-27237 DLL injection in Zabbix Agent and Agent 2 via OpenSSL configuration
Local attackers can escalate privileges by injecting a malicious DLL via a writable OpenSSL configuration path in Zabbix Agent on Windows.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-27237?
CVE-2025-27237 is a high-severity vulnerability in Zabbix, published on 3 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Zabbix Agent and Agent 2 on Windows, the OpenSSL configuration file is loaded from a path writable by low-privileged users, allowing malicious modification and potential local privilege escalation by injecting a DLL.
Weakness: CWE-427
Which versions are affected by CVE-2025-27237?
How do I fix CVE-2025-27237?
No fix has been published for CVE-2025-27237 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27237 being exploited?
There is no known exploitation of CVE-2025-27237 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-r6x3-vwpm-5vwg.