Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| GrapheneOS / GrapheneOS | affected 0 before 2026050400 |
CWE
CWE-441
References
- https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/
- https://grapheneos.org/releases#2026050400
- https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/
ADP enrichment
No English description supplied.