# CVE-2026-44254

## Summary

- **CVE ID:** CVE-2026-44254
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-131, CWE-787
- **Published:** Aug 19, 2026
- **Last Modified:** Aug 19, 2026

## 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.

## Affected Products

- wazuh — wazuh (>= 1.0.0, < 4.14.6)
- wazuh — wazuh (>= 5.0.0-beta1, < 5.0.0-beta2)

## References

- [CNA](https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq)
- [CNA](https://github.com/wazuh/wazuh/pull/35773)
- [CNA](https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96)
- [CNA](https://github.com/wazuh/wazuh/releases/tag/v4.14.6)
- [CNA](https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 28.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._