CVE-2026-5172
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-5172
Vulnerability Information
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Vulnerability Title
CVE-2026-5172
Source: NVD (National Vulnerability Database)
Vulnerability Description
A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
DNSmasq 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DNSmasq是Simon Kelley个人开发者的一个DNS配置工具。 dnsmasq存在安全漏洞，该漏洞源于extract_addresses函数中的缓冲区溢出，允许攻击者通过利用格式错误的DNS响应触发基于堆的越界读取并导致崩溃，使extract_name函数将指针推进到记录末尾之后。
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-2026-5172
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · dnsmasq · 2026-05-11 · 6 CVEs total
| CVE-2026-2291 | CVE-2026-2291 | |
| CVE-2026-4892 | CVE-2026-4892 | |
| CVE-2026-4891 | CVE-2026-4891 | |
| CVE-2026-4893 | CVE-2026-4893 | |
| CVE-2026-4890 | CVE-2026-4890 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-5172
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