CVE-2026-44251Public exploitNetwork attack vector

Manager service crash via short decompressed message

Published Jul 17, 2026 · Updated Jul 17, 2026

Integer underflow in Wazuh Manager 3.0.0 through 4.14.4 allows remote authenticated users to crash wazuh-remoted via a crafted agent message. ReadSecMSG unconditionally advances 53 bytes after decompression and subtracts that offset from an unchecked unsigned final_size, causing wraparound. A crafted message from any enrolled agent forces a fatal allocation failure that disconnects all agents; the alternate HC_REQUEST path exposes heap corruption, but code execution is unproven.

CVSS severity6.5
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in Wazuh Manager 3.0.0 through 4.14.4 allows remote authenticated users to crash wazuh-remoted via a crafted agent message. ReadSecMSG unconditionally advances 53 bytes after decompression and subtracts that offset from an unchecked unsigned final_size, causing wraparound. A crafted message from any enrolled agent forces a fatal allocation failure that disconnects all agents; the alternate HC_REQUEST path exposes heap corruption, but code execution is unproven.

The record

CVE
CVE-2026-44251
Published
Jul 17, 2026
Updated
Jul 17, 2026
Vendor
Wazuh
Product
Wazuh
Classifications
CWE-191, CWE-122, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 3.0.0, < 4.14.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wazuh · Wazuhversion=>= 3.0.0, < 4.14.5

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
CWE-122Heap-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

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