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CVE-2025-62792— Wazuh vulnerable to Heap-based Buffer Over-read in w_expression_match

Quick assessment

Affected
wazuh wazuh
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是Wazuh开源的一个应用软件。用于收集，汇总，索引和分析安全数据，帮助组织检测入侵，威胁和行为异常。 Wazuh 4.12.0之前版本存在安全漏洞，该漏洞源于w_expression_match函数中未正确终止缓冲区，可能导致缓冲区过度读取和敏感数据泄露。

AI Predicted 7.5 Difficulty: Easy EPSS 0.38% · P31

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
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I. Basic Information for CVE-2025-62792

Vulnerability Information
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Vulnerability Title
Wazuh vulnerable to Heap-based Buffer Over-read in w_expression_match
Source: CVE Program / CVE List V5
Vulnerability Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.12.0, a buffer over-read occurs in w_expression_match() when strlen() is called on str_test, because the corresponding buffer is not being properly NULL terminated during its allocation in OS_CleanMSG(). A compromised agent can cause a READ operation beyond the end of the allocated buffer (which may contain sensitive information) by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can cause a buffer over-read and potentially access sensitive data. This vulnerability is fixed in 4.12.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
Wazuh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wazuh是Wazuh开源的一个应用软件。用于收集，汇总，索引和分析安全数据，帮助组织检测入侵，威胁和行为异常。 Wazuh 4.12.0之前版本存在安全漏洞，该漏洞源于w_expression_match函数中未正确终止缓冲区，可能导致缓冲区过度读取和敏感数据泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wazuh wazuh < 4.12.0 -

II. Public POCs for CVE-2025-62792

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III. Intelligence Information for CVE-2025-62792

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Same Patch Batch · wazuh · 2025-10-29 · 8 CVEs total

CVE-2025-62786 Wazuh Vulnerable to Heap-based Buffer Out-Of-Bounds WRITE in decode_win_permissions
CVE-2025-62785 Wazuh fillData NULL pointer dereference causes analysisd crash
CVE-2025-62787 Wazuh Vulnerable to Heap-based Buffer Over-read in DecodeWinevt
CVE-2025-62788 Wazuh Vulnerable to Heap Use After Free in w_copy_event_for_log
CVE-2025-62790 Wazuh vulnerable to NULL pointer dereference in fim_fetch_attributes_state
CVE-2025-62789 Wazuh vulnerable to NULL pointer dereference in fim_alert line 712
CVE-2025-62791 Wazuh vulnerable to NULL pointer dereference in DecodeCiscat

IV. Related Vulnerabilities

Same product: wazuh
Same vendor: wazuh
Same weakness: CWE-126

V. Comments for CVE-2025-62792

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