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
| Vendor | Product | Versions |
|---|---|---|
| bytecodealliance | wasmtime | >= 32.0.0, < 36.0.7, >= 37.0.0, < 42.0.2, * |
| crates.io | wasmtime | 32.0.0, 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