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I. Basic Information for CVE-2025-40776
Vulnerability Information

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Vulnerability Title
Birthday Attack against Resolvers supporting ECS
Source: NVD (National Vulnerability Database)
Vulnerability Description
A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack. This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在可信数据中接受外来的不可信数据
Source: NVD (National Vulnerability Database)
Vulnerability Title
ISC BIND 9 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC BIND 9是ISC组织的一个域名系统软件。 ISC BIND 9存在安全漏洞,该漏洞源于容易受到缓存投毒攻击。以下版本受到影响:9.11.3-S1至9.16.50-S1版本、9.18.11-S1至9.18.37-S1版本和9.20.9-S1至9.20.10-S1版本。
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
ISCBIND 9 9.11.3-S1 ~ 9.16.50-S1 -
II. Public POCs for CVE-2025-40776
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III. Intelligence Information for CVE-2025-40776
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IV. Related Vulnerabilities
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