{"id":"CVE-2018-18928","aliases":["DEBIAN-CVE-2018-18928","EUVD-2018-10634","GHSA-m2ch-6888-5mgr","MGASA-2019-0353"],"status":"published","title":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl...","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02904,"percentile":0.87045,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2018-11-04T20:00:00Z","modified":"2026-10-20T13:19:33Z","fixes":[{"ecosystem":"Debian:12","package":"icu","fixed_in":["63.1-3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"icu","fixed_in":["63.1-3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"icu","fixed_in":["63.1-3"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"icu","fixed_in":["63.1-1.1.mga7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"63.1-3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"63.1-3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"63.1-3"}]}]},{"source":"osv","ecosystem":"Mageia:7","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"63.1-1.1.mga7"}]}]}],"products":[{"vendor":"icu-project","product":"international_components_for_unicode"},{"vendor":"siemens","product":"simatic s7-1500 cpu 1518-4 pn/dp mfp"},{"vendor":"siemens","product":"simatic s7-1500 cpu 1518f-4 pn/dp mfp"},{"vendor":"siemens","product":"siplus s7-1500 cpu 1518-4 pn/dp mfp"}],"references":[{"url":"https://github.com/unicode-org/icu/commit/53d8c8f3d181d87a6aa925b449b51c4a2c922a51","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://unicode-org.atlassian.net/browse/ICU-20246","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://bugs.chromium.org/p/chromium/issues/detail?id=900059","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-18928"},{"url":"https://github.com/advisories/GHSA-m2ch-6888-5mgr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-18928","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0353.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=23155","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/DHAC6XIATCPVSWFNBGGL2MRSBMN2F7D5/","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-18928","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2018-11-04T20:00:00Z","modified":"2026-10-14T06:30:39.138Z","updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2018-10634","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2018-11-04T20:00:00Z","modified":"2026-10-14T06:30:39Z","updated_at":"2026-11-02T17:27:17.902641Z"}],"ghsa":[{"id":"GHSA-m2ch-6888-5mgr","title":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl...","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2022-05-14T01:40:18Z","modified":"2026-10-14T09:31:17Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:13:22.867821Z"}],"nvd":[{"id":"CVE-2018-18928","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2018-11-04T20:29:00.247Z","modified":"2026-10-14T07:16:43.217Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:04:47.196456Z"}],"osv":[{"id":"CVE-2018-18928","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2018-11-04T20:29:00.247Z","modified":"2026-10-20T13:19:33.170402864Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:08.834469Z"},{"id":"DEBIAN-CVE-2018-18928","description":"International Components for Unicode (ICU) for C/C++ 63.1 has an integer overflow in number::impl::DecimalQuantity::toScientificString() in i18n/number_decimalquantity.cpp.","status":"published","published":"2018-11-04T20:29:00.247Z","modified":"2026-10-15T07:47:31.454104983Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"MGASA-2019-0353","title":"Updated icu packages fix security vulnerability","description":"The updated packages fix a security vulnerability:\n\nInternational Components for Unicode (ICU) for C/C++ 63.1 has an integer\noverflow in number::impl::DecimalQuantity::toScientificString() in\ni18n/number_decimalquantity.cpp. (CVE-2018-18928)\n","status":"published","published":"2019-12-06T14:15:42Z","modified":"2026-04-16T04:41:31.236392987Z","updated_at":"2026-11-02T15:49:41.151324Z"}]}}