Wasmtime vulnerable to segfault when using component resources_CVE-2025-62711

2.1 / 10

LOW

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

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.

Basic Information

ID CVE-2025-62711

Source GitHub_M

Published Oct 24, 2025 at 21:54

Affected Product

Vendor bytecodealliance

Product wasmtime

Version >= 38.0.0, < 38.0.3

Affected Versions bytecodealliance wasmtime >= 38.0.0, < 38.0.3

CWE Classification

CWE-755

References

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    "lastseen": "",
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    "published": "2025-10-24T21:54:52.578Z",
    "modified": "2025-10-24T21:54:52.578Z",
    "type": "cve",
    "title": "Wasmtime vulnerable to segfault when using component resources",
    "source": "GitHub_M",
    "references": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmc\nhttps://github.com/bytecodealliance/wasmtime/pull/11592\nhttps://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5",
    "id": "CVE-2025-62711",
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    "sourceData": "bytecodealliance wasmtime >= 38.0.0, < 38.0.3",
    "sourceHref": "",
    "cvss": {
        "score": 2.1,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
        "version": "4.0"
    },
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        "cvssV3": {
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