CVE-2026-25740
Lifecycle Timeline
2Description
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.
Analysis
captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings.
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External POC / Exploit Code
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