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Microsoft Security Response CenterCVE-2026-115384

Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Stack Buffer Overflow

CriticalVendor CVSS 9.9 / 10 1 CVE Published Oct 25, 2026 at 1:05 AM UTC

Summary

Mariner

Products covered

  • azl3 cloud-hypervisor 52.0.152-1 on Azure Linux 3.0

  • azl3 openvmm 0.1.0-1 on Azure Linux 3.0

  • azl3 rust 1.75.0-31 on Azure Linux 3.0

  • azl3 rust 1.96.1-2 on Azure Linux 3.0

Remediation

Release Notes

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.