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I. Basic Information for CVE-2026-26933
Vulnerability Information

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Vulnerability Title
Improper Validation of Array Index in Packetbeat Leading to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数组索引的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Elastic Packetbeat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Packetbeat是荷兰Elastic公司的一个数据采集器。 Elastic Packetbeat存在安全漏洞,该漏洞源于多个协议解析器组件存在数组索引验证不当问题,可能导致通过输入数据操纵触发越界读取,造成应用程序崩溃或资源耗尽。
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
VendorProductAffected VersionsCPESubscribe
ElasticPacketbeat 9.0.0 ~ 9.2.4 -
II. Public POCs for CVE-2026-26933
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III. Intelligence Information for CVE-2026-26933
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IV. Related Vulnerabilities
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