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CVE-2026-45182 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.6 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

CNA: [email protected]CVSS-B:2.2 LOWVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/	CISA-ADP	ExploitTechnical Analysis
https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/	[email protected]	AdvisoryRemedy
https://grapheneos.org/releases#2026050400	[email protected]	Release NotesVendor
https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/	[email protected]	ExploitTechnical Analysis

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-441	Unintended Proxy or Intermediary ('Confused Deputy')	[email protected]

Affected Products

Product	Versions
GrapheneOS	All versions
CPE No CPEs found in CPE dictionary for this product. Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jul 24, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 11, 2026	CVE Modified	CISA-ADP
May 9, 2026	New CVE Received	[email protected]