EUVD-2025-21918Published
Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.4, 33.0.2, and 34.0.2, a bug in Wasmtime's implementation of the WASIp1 set of import functions can lead to a WebAssembly guest inducing a panic in the host (embedder). The speci…
Exact source revision recorded 27 Oct 2026 22:51:56 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
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CVE-2025-53901 · Microsoft / collected KEV context
euvd · EUVD-2025-21918
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-fm79-3f68-h2fc
- https://docs.wasmtime.dev/security-what-is-considered-a-security-vulnerability.html
- https://docs.wasmtime.dev/stability-release.html
- https://github.com/WebAssembly/WASI/blob/e1aa1cae4dda4c1f70f23fe11e922aae92f240a8/legacy/preview1/witx/wasi_snapshot_preview1.witx#L245-L260
- https://github.com/bytecodealliance/wasmtime/blob/037a6edadbc225decbea00a551aabf04203717d9/crates/wasi/src/preview1.rs#L1824-L1836
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.