CVE-2026-44254: Wazuh

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.

Affected products

• Wazuh Wazuh: from 1.0.0, before 4.14.6 (fixed in 4.14.6); version 5.0.0 only

Published 2026-08-19. Last modified 2026-09-18.