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TI-2026-71746 Aliases CVE-2026-74045

Heap buffer overflow in Wazuh manager FIM decoder crashes analysisd

Priority MEDIUM 64CWE-122Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Wazuh from 3.12.0 before 4.14.8 contains a heap buffer overflow in the FIM alert generation function fim_generate_alert(), where the full_log buffer is sized from input but written up to OS_MAXSTR. An enrolled agent can send a crafted FIM syscheck event that corrupts manager heap memory and deterministically crashes wazuh-analysisd, which causes a fleet-wide detection outage. The flaw is classified as CWE-122 (heap-based buffer overflow) and carries a CVSS 4.0 score of 7.1.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

Wazuh from 3.12.0 before 4.14.8 contains a heap buffer overflow in fim_generate_alert() where full_log is sized from input but written bounded by OS_MAXSTR. An enrolled agent can send a crafted FIM syscheck event to corrupt manager heap memory and deterministically crash wazuh-analysisd, causing a fleet-wide detection outage.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix Fixed wazuh-manager (Wazuh): 4.14.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
Wazuhwazuh-manager3.12.0 to before 4.14.84.14.8Patch availableCNA
  • wazuh-manager VendorWazuh Affected 3.12.0 to before 4.14.8 Fixed in 4.14.8 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*——Wazuh
  • cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:* Versions — — ·Wazuh

Remediation

Upgrade wazuh-manager to version 4.14.8 or later, which fixes this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA wazuh-manager (Wazuh) Fixed in 4.14.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    wazuh-manager 4.14.8

    13 records Highest priority Priority HIGH 5 HIGH, 6 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-71739 Missing origin check in Wazuh manager allows arbitrary file readPriority HIGH 77
    • TI-2026-71743 Arbitrary file overwrite in Wazuh manager enables root code executionPriority HIGH 76
    • TI-2026-71742 Session invalidation bypass in Wazuh manager token checkPriority HIGH 72
    Show all 13 records →

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-74045

References

Patch 1

Advisory 1

  • TI-2025-17783 Remote code execution in Wazuh server KEVCVSS 3.1CRITICAL 9.9
  • TI-2026-47604 Wazuh GitHub Actions Shell Injection via Fork Pull Request CVSS 4.0CRITICAL 9.3
  • TI-2026-71739 Missing origin check in Wazuh manager allows arbitrary file read CVSS 4.0HIGH 8.7
  • TI-2026-71743 Arbitrary file overwrite in Wazuh manager enables root code execution CVSS 4.0CRITICAL 9.4
  • 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
See all 101 →

Sources

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