CVE-2026-45182

LOW2.2

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

Published May 9, 2026

Modified 1 months ago

Details

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.

References

WEB

https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/

WEB

https://grapheneos.org/releases#2026050400

DETECTION

https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-45182

CVSS Analysis

CVSS v3.1

2.2