{"cve":"CVE-2025-62711","nvd":{"published":"2025-10-24T22:15:49.850","modified":"2026-10-08T11:10:00.250","status":"Analyzed","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.","cvss_v4":{"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","score":2.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","score":3.1},"cwes":["CWE-755"],"references":["https://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5","https://github.com/bytecodealliance/wasmtime/pull/11592","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmc"],"products":["bytecodealliance:wasmtime"],"source":"nvd","synced_at":"2026-10-19T22:12:35.277909958+00:00"},"epss":{"cve":"CVE-2025-62711","score":0.0041,"percentile":0.34966,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4h67-722j-5pmc","url":"https://osv.dev/vulnerability/GHSA-4h67-722j-5pmc","summary":"Wasmtime vulnerable to segfault when using component resources","modified":"2025-10-27T20:18:01Z","packages":[{"ecosystem":"crates.io","name":"wasmtime","purl":"pkg:cargo/wasmtime","ranges":[">=38.0.0 <38.0.3"],"fixed":["38.0.3"]}]},{"id":"RUSTSEC-2025-0112","url":"https://osv.dev/vulnerability/RUSTSEC-2025-0112","summary":"Possible host crash with host-to-wasm component intrinsics","modified":"2026-10-12T18:00:12.401338698Z","packages":[{"ecosystem":"crates.io","name":"wasmtime","purl":"pkg:cargo/wasmtime","ranges":[">=38.0.0 <38.0.3"],"fixed":["38.0.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}