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CVE-2026-2291

AI Predicted 9.8 Difficulty: Moderate EPSS 0.08% · P23

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
dnsmasqdnsmasq2.92rel2affected
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I. Basic Information for CVE-2026-2291

Vulnerability Information
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Vulnerability Title
CVE-2026-2291
Source: NVD (National Vulnerability Database)
Vulnerability Description
dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.
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_name函数可被利用导致堆缓冲区溢出，允许攻击者注入虚假DNS缓存条目，可能导致DNS查询重定向至攻击者控制的IP地址或导致拒绝服务。
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
dnsmasqdnsmasq 2.92rel2 -

II. Public POCs for CVE-2026-2291

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III. Intelligence Information for CVE-2026-2291

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Same Patch Batch · dnsmasq · 2026-05-11 · 6 CVEs total

CVE-2026-4892CVE-2026-4892
CVE-2026-4891CVE-2026-4891
CVE-2026-4893CVE-2026-4893
CVE-2026-4890CVE-2026-4890
CVE-2026-5172CVE-2026-5172

IV. Related Vulnerabilities

Same product: dnsmasq
Same vendor: dnsmasq

V. Comments for CVE-2026-2291

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