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01 Record

CVE-2026-45182

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

LowPUBLISHEDCNA: mitre
CNA base score2.2 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

02 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

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.09% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 0.5% of scored records. A rank, not a probability.
NVD base score
2.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-07-24.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-05-09 22:07Z5 MO AGO
Last updated
2026-05-11 15:00Z5 MO AGO
Reserved
2026-05-09
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Low (CVSS 2.2)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Weaknesses
  • CWE-441Unintended Proxy or Intermediary ('Confused Deputy')Class
Data version
5.2
Document digest
1862d434dbf9ca419e2b6bee00d2954ddc4ee58d0b4807c2f02cf654084d062d

05 Affected products

VendorProductVersionsPlatforms
GrapheneOSGrapheneOS0 to < 2026050400—

06 References