{"id":"CVE-2021-45293","aliases":["DEBIAN-CVE-2021-45293","EUVD-2021-32073","GHSA-mcjm-q5m8-3xx2","UBUNTU-CVE-2021-45293"],"status":"published","title":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address...","description":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00802,"percentile":0.56929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2021-12-21T17:54:31Z","modified":"2026-10-24T10:47:39Z","fixes":[{"ecosystem":"Debian:12","package":"binaryen","fixed_in":["104-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"binaryen","fixed_in":["104-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"binaryen","fixed_in":["104-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"104-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"104-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"104-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["89-1","90-1","91-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["99-3","105-1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"webassembly","product":"binaryen"}],"references":[{"url":"https://github.com/WebAssembly/binaryen/issues/4384","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YCWLB4PWYQO55F7IGNC7KUYN2MFZE3JP/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKGCHPS7UAIOOBGSXDJAUFE5CROTTF6J/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45293"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UKGCHPS7UAIOOBGSXDJAUFE5CROTTF6J/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YCWLB4PWYQO55F7IGNC7KUYN2MFZE3JP/"},{"url":"https://github.com/advisories/GHSA-mcjm-q5m8-3xx2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-45293","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-45293","tags":["report"]},{"url":"https://github.com/WebAssembly/binaryen/pull/4388","tags":["report"]},{"url":"https://github.com/WebAssembly/binaryen/commit/b1f6298ed8756bdc3336429c04b92ba58d000b49","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-45293","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-45293","description":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.","status":"published","published":"2021-12-21T17:54:31Z","modified":"2024-08-04T04:39:20.425Z","updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2021-32073","description":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.","status":"published","published":"2021-12-21T17:54:31Z","modified":"2024-08-04T04:39:20Z","updated_at":"2026-11-03T03:08:27.448176Z"}],"ghsa":[{"id":"GHSA-mcjm-q5m8-3xx2","title":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address...","description":"A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in 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wasm::WasmBinaryBuilder::visitLet.","status":"published","published":"2021-12-21T18:15:00Z","modified":"2025-10-24T04:50:38Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:30.277322Z"}]}}