CVE-2026-45182

LOW

GrapheneOS < 2026050400 - VPN IP Address Leak via QuicConnectionClosePayload Optimization

Title source: llm
STIX 2.1

Description

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 (3)

Core 3

Scores

CVSS v3 2.2
EPSS 0.0009
EPSS Percentile 0.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-441
Status published
Products (1)
GrapheneOS/GrapheneOS < 2026050400
Published May 09, 2026
Tracked Since May 10, 2026