CVE-2025-62787— Wazuh Vulnerable to Heap-based Buffer Over-read in DecodeWinevt
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I. Basic Information for CVE-2025-62787
Vulnerability Information
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Vulnerability Title
Wazuh Vulnerable to Heap-based Buffer Over-read in DecodeWinevt
Source: NVD (National Vulnerability Database)
Vulnerability Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.10.2, a buffer over-read occurs in DecodeWinevt() when child_attr[p]->attributes[j] is accessed, because the corresponding index (j) is incorrect. 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. While the buffer over-read is always triggered while resolving the arguments of mdebug2, specific configuration options (analysisd.debug=2) need to be in place for the respective data to be leaked. This vulnerability is fixed in 4.10.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
缓冲区上溢读取
Source: NVD (National Vulnerability Database)
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 4.10.2之前版本存在安全漏洞，该漏洞源于DecodeWinevt函数中存在缓冲区过度读取，可能导致敏感数据泄露。
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
II. Public POCs for CVE-2025-62787
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- Check malformed event · wazuh/wazuh@267d5d5 · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2025-62787
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-2025-62788 | 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-2025-62792 | Wazuh vulnerable to Heap-based Buffer Over-read in w_expression_match | |
| CVE-2025-62791 | Wazuh vulnerable to NULL pointer dereference in DecodeCiscat |
IV. Related Vulnerabilities
Same product: wazuh
- CVE-2026-41499
Wazuh: Multiple Heap-based NULL WRITE Buffer Underflows in p - CVE-2026-30893
Wazuh cluster sync path traversal in decompress_files() enab - CVE-2026-28221
Wazuh: Pre-auth stack-based buffer overflow in wazuh-remoted - CVE-2026-26206
Wazuh: API brute-force protection bypass via race condition - CVE-2026-26204
Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertDat
Same vendor: wazuh
- CVE-2026-41499
Wazuh: Multiple Heap-based NULL WRITE Buffer Underflows in p - CVE-2026-30893
Wazuh cluster sync path traversal in decompress_files() enab - CVE-2026-28221
Wazuh: Pre-auth stack-based buffer overflow in wazuh-remoted - CVE-2026-26206
Wazuh: API brute-force protection bypass via race condition - CVE-2026-26204
Wazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertDat
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