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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 10 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 10 Feb 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Nixos
Nixos captive-browser
Vendors & Products Nixos
Nixos captive-browser

Mon, 09 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title Privilege escalation to the `CAP_NET_RAW` capability via the `programs.captive-browser` NixOS module
Weaknesses CWE-250
References
Metrics cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-10T15:59:39.070Z

Reserved: 2026-02-05T16:48:00.428Z

Link: CVE-2026-25740

cve-icon Vulnrichment

Updated: 2026-02-10T15:30:17.720Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-09T21:15:49.163

Modified: 2026-02-09T21:55:30.093

Link: CVE-2026-25740

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-10T15:37:25Z

Weaknesses