Microsoft advisory for CVE-2026-4746 — cbl2 cloud-hypervisor 32.0-7 on CBL Mariner 2.0
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4746. This page also shows what EchelonGraph holds for CVE-2026-4746, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products1
- cbl2 cloud-hypervisor 32.0-7 on CBL Mariner 2.0
🧭 EchelonGraph on CVE-2026-4746
- EchelonGraph score
- 10.0 CRITICAL
- CISA KEV
- Not listed
- Fix status
- An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is associated with program files inflate.C. This issue affects proton: before 1.6.16.
Published by GovTech CSG, the CVE Numbering Authority that assigned CVE-2026-4746, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).