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CVE-2026-74045— Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder

Quick assessment

Affected
Wazuh wazuh-manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wazuh 在 3.12.0 到 4.14.8 版本（不含 4.14.8）中存在一个堆缓冲区溢出漏洞，位于 函数中。该漏洞源于 的大小由输入数据决定，但其写入操作受限于 。受此影响，已注册的代理（agent）可以发送特制的 FIM（文件完整性监控）syscheck 事件，从而破坏管理器的堆内存，并导致 进程确定性地崩溃，最终引发整个集群的检测服务中断。

CVSS 7.1 · High EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Wazuh wazuh-manager 3.12.0< 4.14.8 affected
4.14.8 unaffected
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I. Basic Information for CVE-2026-74045

Vulnerability Information
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Vulnerability Title
Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Wazuh wazuh-manager 3.12.0 ~ 4.14.8 -

II. Public POCs for CVE-2026-74045

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III. Intelligence Information for CVE-2026-74045

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Vendor Advisories for CVE-2026-74045 (2)

Vendor Pages for CVE-2026-74045 (1)

Same Patch Batch · Wazuh · 2026-10-13 · 15 CVEs total

CVE-2026-74041 9.1 CRITICAL Wazuh 4.14.3 before 4.14.8 Remote Command Validation Bypass via Case Mismatch
CVE-2026-74040 9.1 CRITICAL Wazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_worker
CVE-2026-74043 9.0 CRITICAL Wazuh 4.1.1 before 4.14.8 Path Traversal via Cluster Upload Functions
CVE-2026-74034 7.5 HIGH Wazuh 4.1.0 before 4.14.8 Arbitrary File Read via upgrade_custom Command
CVE-2026-74036 7.2 HIGH Wazuh 4.3.0 before 4.14.8 Remote Code Execution via SCA Command Policies
CVE-2026-74037 7.2 HIGH Wazuh 4.0.0 before 4.14.8 Session Invalidation Bypass in check_token
CVE-2026-74035 7.2 HIGH Wazuh 4.6.0 before 4.14.8 Authentication Bypass via Empty Password in update_user
CVE-2026-74047 6.5 MEDIUM Wazuh 4.0.0 before 4.14.8 authd.pass Disclosure via Agent 000 Config Endpoint
CVE-2026-74031 6.5 MEDIUM Wazuh 4.1.1 before 4.14.8 Path Traversal File Deletion via Rule/Decoder Delete Helpers
CVE-2026-74033 6.1 MEDIUM Wazuh from 4.1.1 before 4.14.8 Path Traversal in CDB List Cluster Handlers
CVE-2026-93346 5.3 MEDIUM Wazuh 4.0.0 before 4.14.8 API Brute-Force Protection Bypass via Race Condition
CVE-2026-74030 4.9 MEDIUM Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
CVE-2026-93347 4.9 MEDIUM Wazuh 4.1.1 before 4.14.8 Path Traversal via Cluster get_list_file
CVE-2026-74032 4.3 MEDIUM Wazuh 4.0.0 before 4.14.8 RBAC Authorization Bypass via /security/actions

IV. Related Vulnerabilities

Same product: wazuh-manager
Same vendor: Wazuh
Same weakness: CWE-122

V. Comments for CVE-2026-74045

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