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.
History

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-09T22:12:55.615Z

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

Link: CVE-2026-45182

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-45182

cve-icon Redhat

No data.