Low severity3.1NVD Advisory· Published Oct 24, 2025· Updated Jun 17, 2026
CVE-2025-62711
CVE-2025-62711
Description
Wasmtime is a runtime for WebAssembly. In versions from 38.0.0 to before 38.0.3, the implementation of component-model related host-to-wasm trampolines in Wasmtime contained a bug where it's possible to carefully craft a component, which when called in a specific way, would crash the host with a segfault or assert failure. Wasmtime 38.0.3 has been released and is patched to fix this issue. There are no workarounds.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
wasmtimecrates.io | >= 38.0.0, < 38.0.3 | 38.0.3 |
Affected products
3cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*+ 1 more
- cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*range: >=38.0.0,<38.0.3
- (no CPE)range: >= 38.0.0, < 38.0.3
Patches
Vulnerability mechanics
References
6- github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5nvdPatchWEB
- github.com/bytecodealliance/wasmtime/pull/11592nvdPatchWEB
- github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmcnvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-4h67-722j-5pmcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-62711ghsaADVISORY
- rustsec.org/advisories/RUSTSEC-2025-0112.htmlghsaWEB
News mentions
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