{"id":"CVE-2020-21913","title":"International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.","summary":"International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-416"],"vendor":"unicode","product":"international_components_for_unicode","affected":["international_components_for_unicode < 66.1","debian_linux = 9.0","debian_linux = 10.0"],"patched":["international_components_for_unicode 66.1"],"published":"2021-09-20","updated":"2026-10-14","sourceUpdated":"2026-10-14T10:17:32.143","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-21913","references":[{"url":"https://github.com/unicode-org/icu/pull/886","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html","label":"cve@mitre.org"},{"url":"https://unicode-org.atlassian.net/browse/ICU-20850","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2021/dsa-5014","label":"cve@mitre.org"},{"url":"https://github.com/unicode-org/icu/pull/886","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://unicode-org.atlassian.net/browse/ICU-20850","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2021/dsa-5014","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.01213,"epssPercentile":0.67748,"ingestedAt":"2026-10-14T10:25:41.192Z","slug":"CVE-2020-21913","body":"## Overview\n\nInternational Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.\n\n## Affected\n\n- `international_components_for_unicode < 66.1`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `international_components_for_unicode 66.1`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}