{"id":"CVE-2017-11671","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-11671","generatedAt":"2026-10-29T02:45:44.620Z","title":"Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED…","description":"Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing failures of these instructions to go unreported. This could potentially lead to less randomness in random number generation.","published":"2017-07-26T21:29:00.000Z","lastModified":"2026-06-17T01:02:11.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":4,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-338"],"affected":["gnu/gcc"],"epss":{"score":0.00471,"percentile":0.40589,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://openwall.com/lists/oss-security/2017/07/27/2","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/100018","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0849","source":"cve@mitre.org"},{"url":"https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180","tags":["Issue Tracking","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html","tags":["Mailing List"],"source":"cve@mitre.org"},{"url":"http://openwall.com/lists/oss-security/2017/07/27/2","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/100018","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:0849","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80180","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01349.html","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-11671","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}