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I. Basic Information for CVE-2026-27831
Vulnerability Information

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Vulnerability Title
rldns Vulnerable to Heap-based Out-of-Bounds Read
Source: NVD (National Vulnerability Database)
Vulnerability Description
rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
rldns 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rldns是BlueDragonSecurity个人开发者的一个DNS服务器。 rldns 1.3版本存在缓冲区错误漏洞,该漏洞源于堆越界读取,可能导致拒绝服务。
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
bluedragonsecurityrldns = 1.3 -
II. Public POCs for CVE-2026-27831
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 8640 chars
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III. Intelligence Information for CVE-2026-27831
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IV. Related Vulnerabilities
V. Comments for CVE-2026-27831

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