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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 13 May 2026 07:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 10 May 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Grapheneos
Grapheneos grapheneos
Vendors & Products Grapheneos
Grapheneos grapheneos

Sun, 10 May 2026 00:30:00 +0000

Type Values Removed Values Added
Title Android VPN IP Leakage via System Server UDP Path

Sat, 09 May 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-441
References
Metrics cvssV3_1

{'score': 2.2, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-11T15:00:48.072Z

Reserved: 2026-05-09T22:07:58.636Z

Link: CVE-2026-45182

cve-icon Vulnrichment

Updated: 2026-05-11T15:00:43.738Z

cve-icon NVD

Status : Deferred

Published: 2026-05-09T23:16:32.277

Modified: 2026-05-13T15:46:19.993

Link: CVE-2026-45182

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T21:24:22Z

Weaknesses