Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | Wazuh | >= 1.0.0, < 4.14.6 |
Related Weaknesses (CWE)
References
- https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96Patch
- https://github.com/wazuh/wazuh/pull/35773Issue TrackingPatch
- 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-hqgqExploitVendor Advisory
FAQ
What is CVE-2026-44254?
CVE-2026-44254 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 in...
How severe is CVE-2026-44254?
CVE-2026-44254 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44254?
Check the references section above for vendor advisories and patch information. Affected products include: Wazuh Wazuh.