Wasmtime miscompiled guest heap access enables sandbox escape on aarch64 Cranelift

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-34971 · Microsoft / collected KEV context

EUVD-2026-21027

GHSA-jhxm-h53p-jm7w

RUSTSEC-2026-0096

cve-program · CVE-2026-34971

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w

euvd · EUVD-2026-21027

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w

nvd · CVE-2026-34971

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w
• https://access.redhat.com/security/cve/CVE-2026-34971
• https://bugzilla.redhat.com/show_bug.cgi?id=2457008
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34971.json

osv · GHSA-jhxm-h53p-jm7w

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w
• https://nvd.nist.gov/vuln/detail/CVE-2026-34971
• https://github.com/bytecodealliance/wasmtime
• https://rustsec.org/advisories/RUSTSEC-2026-0096.html

osv · RUSTSEC-2026-0096

• https://crates.io/crates/wasmtime
• https://rustsec.org/advisories/RUSTSEC-2026-0096.html
• https://github.com/bytecodealliance/wasmtime/pull/13013

No related operational record is retained in the current change model.