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01 Record

CVE-2026-45782

Cloud Hypervisor: Use-after-free in virtio-block Async I/O Completion

HighPUBLISHEDCNA: GitHub_M
CNA base score8.9 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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02 Description

Cloud Hypervisor: Use-after-free in virtio-block Async I/O Completion

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total 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
0.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 3.1% of scored records. A rank, not a probability.
NVD base score
8.9 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-07-23.
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
2026-06-09 22:53Z4 MO AGO
Last updated
2026-06-10 16:32Z4 MO AGO
Reserved
2026-05-13
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.9)
CNA CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Weaknesses
Data version
5.2
Document digest
78b6b10c8bafff1fdd9041e89b25810d0ec88e4bb02340fabbaf63dbdb9cf4c7

05 Affected products

VendorProductVersionsPlatforms
cloud-hypervisorcloud-hypervisor>= 21.0, < 51.2—

06 References