VDB

CVE-2026-34971

CVE-2026-34971 PUBLISHED CVSS 9 CRITICAL

Wasmtime: Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift

EPSS 0.02% · 3.7th percentile

Risk Scores

CVSS v4.0
9
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS Score
0.02%
3.7th percentile

Affected Products

VendorProductVersions
bytecodealliancewasmtime>= 32.0.0, < 36.0.7, >= 37.0.0, < 42.0.2, *
crates.iowasmtime32.0.0, 43.0.0, 37.0.0

Timeline

  • Apr 9, 2026 CVE Published
  • Apr 9, 2026 PoC Published
  • Apr 10, 2026 Security Advisory
  • May 18, 2026 EPSS Score
  • May 19, 2026 EPSS Score
  • May 20, 2026 EPSS Score
  • May 21, 2026 EPSS Score
  • May 22, 2026 EPSS Score
  • May 23, 2026 EPSS Score
  • May 24, 2026 EPSS Score
  • May 25, 2026 EPSS Score
  • May 26, 2026 EPSS Score
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