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CVE-2026-45182

Quick assessment

Affected
GrapheneOS GrapheneOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GrapheneOS是GrapheneOS公司的一个移动操作系统。 GrapheneOS 2026050400之前版本存在安全漏洞，该漏洞源于registerQuicConnectionClosePayload优化，可能导致攻击者发现VPN用户的真实IP地址。

CVSS 2.2 · Low EPSS 0.09% · P1

Possible ATT&CK Techniques 1 AI

T1041 · Exfiltration Over C2 Channel

Affected Version Matrix 1

VendorProduct Version RangeStatus
GrapheneOS GrapheneOS < 2026050400 affected
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I. Basic Information for CVE-2026-45182

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
GrapheneOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GrapheneOS是GrapheneOS公司的一个移动操作系统。 GrapheneOS 2026050400之前版本存在安全漏洞，该漏洞源于registerQuicConnectionClosePayload优化，可能导致攻击者发现VPN用户的真实IP地址。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GrapheneOS GrapheneOS 0 ~ 2026050400 -

II. Public POCs for CVE-2026-45182

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III. Intelligence Information for CVE-2026-45182

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Security Blog Posts for CVE-2026-45182 (1)

News Coverage for CVE-2026-45182 (1)

Other References for CVE-2026-45182 (1)

IV. Related Vulnerabilities

Same weakness: CWE-441

V. Comments for CVE-2026-45182

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