CVE-2023-49275Public exploitNetwork attack vector

Analysis-engine crash via unchecked timestamp dereference

Published Apr 19, 2024 · Updated Aug 2, 2024

NULL pointer dereference in Wazuh Manager 3.2.0 through 4.7.0 allows remote attackers to crash analysisd via a crafted syscollector message. The syscollector decoder retrieves a missing timestamp with cJSON_GetObjectItem and dereferences the resulting NULL pointer without validation. The sender must be able to submit agent-protocol syscollector traffic; the consequence is interruption of the analysis engine, not data access or modification.

CVSS severity7.5
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Wazuh Manager 3.2.0 through 4.7.0 allows remote attackers to crash analysisd via a crafted syscollector message. The syscollector decoder retrieves a missing timestamp with cJSON_GetObjectItem and dereferences the resulting NULL pointer without validation. The sender must be able to submit agent-protocol syscollector traffic; the consequence is interruption of the analysis engine, not data access or modification.

The record

CVE
CVE-2023-49275
Published
Apr 19, 2024
Updated
Aug 2, 2024
Vendor
Wazuh
Product
Wazuh
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=-
  2. Affected versionversion=>= 3.2.0, < 4.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wazuh · Wazuhversion=-; version=>= 3.2.0, < 4.7.1

Published CVSS scores

7.5Wazuh GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.5GitHub CNACVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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

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Your stack

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