PT-2026-39421 · Grapheneos · Grapheneos

Published 2026-05-09 · Updated 2026-05-09 · CVE-2026-45182

NVD

CVSS v3.1

2.2

Low

Base vector

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

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.

Fix

Weakness Enumeration

CWE-441

Related Identifiers

CVE-2026-45182

Affected Products

Grapheneos

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-45182 · Security Note
• https://lowlevel.fun/posts/tiny-udp-cannon-android-vpn-bypass · Note
• https://grapheneos.org/releases#2026050400 · Note
• https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch · Note