CVE-2026-45182
2.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GrapheneOS | GrapheneOS | 0 < 2026050400 | affected |
Weaknesses
- CWE-441: CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
Additional References
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/
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