CVE-2026-45182

Android VPN IP Leakage via System Server UDP Path

Published May 9, 2026 CVSS 3.1 · 2.2 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Grapheneos
Grapheneos grapheneos
Vendors & Products Grapheneos
Grapheneos grapheneos
Type Values Removed Values Added
Title Android VPN IP Leakage via System Server UDP Path
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 11, 2026, 3:00 PM
Reserved
May 9, 2026, 10:07 PM
Status
Deferred
Published
May 9, 2026, 11:16 PM
Modified
Jul 24, 2026, 8:10 PM