Stack-Based Buffer Overflow in Wazuh Platform Affects Security Configuration Assessment Decoder

CVE-2026-25790

What is CVE-2026-25790?

The Wazuh platform, a free and open-source solution for threat prevention, detection, and response, is vulnerable to multiple stack-based buffer overflow issues affecting the Security Configuration Assessment (SCA) decoder. These vulnerabilities arise when using sprintf with a floating-point format specifier on a fixed-size buffer. A remote attacker can exploit this weakness by sending a specially crafted JSON event, potentially leading to a crash of the Wazuh manager or unauthorized remote code execution. Specifically, when large floating-point numbers are processed, they exceed the allocated 128-byte stack buffer, causing stack corruption. This issue has been resolved in version 4.14.3 of Wazuh.

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