{"id":"CVE-2026-45182","aliases":["EUVD-2026-28944","GHSA-47rq-88xv-gpxv"],"status":"published","title":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a...","description":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the \"Block connections without VPN\" and \"Always-on VPN\" settings are enabled.","severity":{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00094,"percentile":0.00564,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-441"],"published":"2026-05-09T22:07:59Z","modified":"2026-07-24T20:10:00Z","products":[{"vendor":"grapheneos","product":"grapheneos"}],"references":[{"url":"https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/","tags":["exploit"]},{"url":"https://grapheneos.org/releases#2026050400"},{"url":"https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45182"},{"url":"https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch"},{"url":"https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass"},{"url":"https://github.com/advisories/GHSA-47rq-88xv-gpxv"}],"sources":{"cve":[{"id":"CVE-2026-45182","description":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the \"Block connections without VPN\" and \"Always-on VPN\" settings are enabled.","status":"published","published":"2026-05-09T22:07:59.122Z","modified":"2026-05-11T15:00:48.072Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-441"],"updated_at":"2026-11-02T13:46:32.755125Z"}],"euvd":[{"id":"EUVD-2026-28944","description":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the \"Block connections without VPN\" and \"Always-on VPN\" settings are enabled.","status":"published","published":"2026-05-09T22:07:59Z","modified":"2026-05-11T15:00:48Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T19:05:11.205633Z"}],"ghsa":[{"id":"GHSA-47rq-88xv-gpxv","title":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a...","description":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the \"Block connections without VPN\" and \"Always-on VPN\" settings are enabled.","status":"published","published":"2026-05-10T00:33:20Z","modified":"2026-05-10T00:33:24Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-441"],"updated_at":"2026-11-02T15:07:58.197878Z"}],"nvd":[{"id":"CVE-2026-45182","description":"GrapheneOS before 2026050400 allows attackers to discover the real IP address of a VPN user as a consequence of a registerQuicConnectionClosePayload optimization, because an application can let system_server transmit UDP traffic on its behalf. This occurs when the \"Block connections without VPN\" and \"Always-on VPN\" settings are enabled.","status":"published","published":"2026-05-09T23:16:32.277Z","modified":"2026-07-24T20:10:00.147Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-441"],"updated_at":"2026-11-02T14:12:18.239974Z"}]}}