{"id":"EUVD-2025-201826","enisaUuid":"de6f2d0a-8af3-33bf-9961-84985f8b5bba","description":"Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi\u0027s linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible.","datePublished":"Dec 9, 2025, 2:52:46 AM","dateUpdated":"Dec 9, 2025, 3:21:18 PM","baseScore":8.4,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","references":"https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq\n","aliases":"CVE-2025-66627\nGHSA-g4v2-cjqp-rfmq\n","assigner":"GitHub_M","epss":0.15,"enisaIdProduct":[{"id":"3d7228f7-f316-36c1-8b81-2c2277e86fb2","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.42.0, \u003c 0.47.1"},{"id":"575b1a89-1d2b-3b65-8fba-52ef212d8e1f","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.41.0, \u003c 0.41.2"},{"id":"780caf06-756d-3466-b5af-87b372af7217","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.50.0, \u003c 0.51.3"},{"id":"c302bfe8-3843-36b7-8d71-b59a8828e464","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"1.0.0, \u003c 1.0.1"}],"enisaIdVendor":[{"id":"67e4e3ab-5691-3187-81ad-76493ff4cec7","vendor":{"name":"wasmi-labs"}}],"enisaIdVulnerability":[{"id":"046fde1f-b29d-3dee-af66-e5ced0424622","vulnerability":{"id":"GHSA-g4v2-cjqp-rfmq","description":"Critical Use-After-Free in Wasmi\u0027s Linear Memory","datePublished":"Dec 8, 2025, 10:15:49 PM","dateUpdated":"Dec 9, 2025, 7:17:35 PM","baseScore":0.0,"references":"https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-66627\nhttps://github.com/wasmi-labs/wasmi/commit/0e6f0d2a8325602c58d6a53ce1c0e6045eb6a490\nhttps://github.com/wasmi-labs/wasmi\n","enisa_id":"EUVD-2025-201826\n","aliases":"GHSA-g4v2-cjqp-rfmq\nCVE-2025-66627\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:51:54 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"7fe3bb16-4408-31a8-b663-3623426c3b10","vulnerability":{"id":"CVE-2025-66627","description":"Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi\u0027s linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible.","datePublished":"Dec 9, 2025, 2:52:46 AM","dateUpdated":"Dec 9, 2025, 3:21:18 PM","status":"PUBLISHED","baseScore":8.4,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","references":"https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq\n","enisa_id":"EUVD-2025-201826\n","assigner":"GitHub_M","epss":0.15,"dataProcessed":"Oct 27, 2026, 7:20:58 AM","vulnerabilityProduct":[{"id":"1853d60a-5a8f-3ac7-8877-b02989b462d2","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"1.0.0, \u003c 1.0.1"},{"id":"2dcfa87b-0bf0-3a80-aaeb-1f6c8ea47ab3","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.41.0, \u003c 0.41.2"},{"id":"9c622c30-23bf-33ba-a356-5442ceb49742","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.42.0, \u003c 0.47.1"},{"id":"efe517e4-73b0-3741-a60f-8913171401ed","product":{"name":"wasmi","vendor":{"name":"wasmi-labs"}},"product_version":"0.50.0, \u003c 0.51.3"}],"vulnerabilityVendor":[{"id":"7c8ddace-5057-3adb-83e2-5dcfcc32ac04","vendor":{"name":"wasmi-labs"}}]}}],"enisaIdAdvisory":[]}