CVE-2026-44254

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.

• CWE-131
• CWE-787

• https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96Patch
• https://github.com/wazuh/wazuh/pull/35773Issue Tracking, Patch
• https://github.com/wazuh/wazuh/releases/tag/v4.14.6Release Notes
• https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2Release Notes
• https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgqExploit, Vendor Advisory

Published

Aug 19, 2026

Last Modified

Sep 18, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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