CVE-2026-74045Network attack vectorHinoki check available

Detection outage via undersized FIM alert buffer

Published Oct 13, 2026 · Updated Oct 13, 2026

Heap overflow in Wazuh manager before 4.14.8 allows remote authenticated users to crash wazuh-analysisd via crafted FIM events. In fim_generate_alert(), full_log is allocated from the input length, but snprintf uses OS_MAXSTR as its bound, allowing generated alert text to exceed the allocation. An enrolled agent can send the crafted syscheck event, corrupting manager heap memory and interrupting detection across the managed fleet.

CVSS severityUnavailable
Unscored
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Heap overflow in Wazuh manager before 4.14.8 allows remote authenticated users to crash wazuh-analysisd via crafted FIM events. In fim_generate_alert(), full_log is allocated from the input length, but snprintf uses OS_MAXSTR as its bound, allowing generated alert text to exceed the allocation. An enrolled agent can send the crafted syscheck event, corrupting manager heap memory and interrupting detection across the managed fleet.

The record

CVE
CVE-2026-74045
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Wazuh
Product
Wazuh manager
Classifications
T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.12.0 <4.14.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wazuh · Wazuh managerversion=3.12.0 <4.14.8

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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