CVE-2026-25740

5.8 mediumEPSS 0.2%

Medium (5.8). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.8 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWE: CWE-250
Published: 2026-02-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/NixOS/nixpkgs/pull/487775
https://github.com/NixOS/nixpkgs/pull/487779
https://github.com/NixOS/nixpkgs/security/advisories/GHSA-wc3r-c66x-8xmc

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