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TI-2026-32231 Aliases CVE-2026-44254

Wazuh: Stack Out-of-Bounds Write in remoted Decompression Path

Priority LOW 25CWE-131Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-131 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00497 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed wazuh (wazuh): 4.14.6, 5.0.0-beta2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Wazuhwazuh1.0.0 to before 4.14.6; 5.0.0-beta1 to before 5.0.0-beta24.14.6, 5.0.0-beta2Patch availableCNA
  • wazuh VendorWazuh Affected 1.0.0 to before 4.14.6; 5.0.0-beta1 to before 5.0.0-beta2 Fixed in 4.14.6, 5.0.0-beta2 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*1.0.0 to before 4.14.6VulnerableWazuh
cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*5.0.0 beta1VulnerableWazuh
  • cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:* Versions 1.0.0 to before 4.14.6 Vulnerable ·Wazuh
  • cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:* Versions 5.0.0 beta1 Vulnerable ·Wazuh

Remediation

  • Fix · CNA wazuh (wazuh) Fixed in 4.14.6, 5.0.0-beta2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44254

References

Exploit 1

Patch 2

Other 2

  • TI-2025-17783 Remote code execution in Wazuh server KEVCVSS 3.1CRITICAL 9.9
  • TI-2026-23722 Path traversal in wazuh CVSS 3.1CRITICAL 9.9
  • TI-2024-01157 Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft CVSS 4.0CRITICAL 9.5
  • TI-2026-22556 Wazuh: Pre-auth stack-based buffer overflow in wazuh-remoted print_hex_string() due to signed char promotion on x86_64 CVSS 3.1HIGH 8.2
  • TI-2026-35598 Wazuh: cluster peer can read arbitrary master files and forge offline REST API… CVSS 3.1CRITICAL 9.1
  • TI-2026-35467 Wazuh: merged-file header path traversal in cluster sync allows arbitrary file write under WAZUH_PATH in Wazuh manager CVSS 3.1CRITICAL 9.1
See all 72 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences