{"id":"CVE-2017-20004","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-20004","generatedAt":"2026-10-28T20:04:16.413Z","title":"MutexGuards can be used across threads with any types, allowing for memory safety issues through race conditions.","description":"In the standard library in Rust before 1.19.0, there is a synchronization problem in the MutexGuard object. MutexGuards can be used across threads with any types, allowing for memory safety issues through race conditions.","published":"2021-04-14T07:15:11.000Z","lastModified":"2026-06-17T01:14:54.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-362"],"affected":["rust-lang/rust"],"epss":{"score":0.00799,"percentile":0.56348,"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 (0.80%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/rust-lang/rust/issues/41622","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/rust-lang/rust/pull/41624","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/rust-lang/rust/issues/41622","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/rust-lang/rust/pull/41624","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-20004","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."}