DNS
CVE-2026-25740
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings.
Technical ContextAI
Classified as CWE-250 (Execution with Unnecessary Privileges). 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.
Affected ProductsAI
Fixed in: 25
RemediationAI
Fixed in version 25.11.
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Same weakness CWE-250 – Execution with Unnecessary Privileges
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External POC / Exploit Code
Leaving vuln.today