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I. Basic Information for CVE-2026-25740
Vulnerability Information

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Vulnerability Title
Privilege escalation to the `CAP_NET_RAW` capability via the `programs.captive-browser` NixOS module
Source: NVD (National Vulnerability Database)
Vulnerability Description
captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings. In 25.05 and earlier, when programs.captive-browser is enabled, any user of the system can run arbitrary commands with the CAP_NET_RAW capability (binding to privileged ports, spoofing localhost traffic from privileged services...). This vulnerability is fixed in 25.11 and 26.05.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
带着不必要的权限执行
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nixpkgs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nixpkgs是NixOS开源的一个 100000 多个软件包的集合。可以使用 Nix 包管理器安装。 Nixpkgs 25.05及之前版本存在安全漏洞,该漏洞源于任何系统用户均可运行具有CAP_NET_RAW能力的任意命令,可能导致绑定特权端口或欺骗本地流量。
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
NixOSnixpkgs <= 25.05 -
II. Public POCs for CVE-2026-25740
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III. Intelligence Information for CVE-2026-25740
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IV. Related Vulnerabilities
V. Comments for CVE-2026-25740

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