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Wasmtime: Preemption and traps during bulk operations enable breaking internal VM state

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

11 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

9 Nov 2026 05:04:51 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

7 Nov 2026 04:28:25 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

5 Nov 2026 03:55:38 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

3 Nov 2026 02:58:51 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

1 Nov 2026 02:06:25 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

30 Oct 2026 01:50:28 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

28 Oct 2026 00:47:36 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

euvd · EUVD-2026-91765 · Published

25 Oct 2026 04:17:29 UTC

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…

nvd · CVE-2026-104855 · Published

24 Oct 2026 13:19:54 UTC

Wasmtime: Preemption and traps during bulk operations enable breaking internal VM state

osv · GHSA-2hw9-mc66-jc2q · Published

24 Oct 2026 13:19:54 UTC

Preemption and traps during bulk operations enable breaking internal VM state

osv · RUSTSEC-2026-0223 · Published

23 Oct 2026 15:48:27 UTC

Wasmtime: Preemption and traps during bulk operations enable breaking internal VM state

cve-program · CVE-2026-104855 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 10 Nov 10:31 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current