CVE-2026-45182

CVSS 2.2 LOWEPSS 0.1%CWE-441

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 2.2EPSS 0.1%KEV nãoPoC —Patch —

Lifecycle

09 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

Affected products

GrapheneOS · GrapheneOS

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References

https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/https://grapheneos.org/releases#2026050400 https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass/