{"id":"CVE-2023-20588","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-20588","generatedAt":"2026-11-04T23:01:29.866Z","title":"A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.","description":"\nA division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. \n\n\n\n\n\n\n\n","published":"2023-08-08T18:15:12.000Z","lastModified":"2026-06-17T05:30:22.000Z","status":"Modified","sourceIdentifier":"psirt@amd.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-369"],"affected":["debian/debian linux","amd/epyc 7351p firmware","amd/epyc 7401p firmware","amd/epyc 7551p firmware","amd/epyc 7251 firmware","amd/epyc 7261 firmware","amd/epyc 7281 firmware","amd/epyc 7301 firmware","amd/epyc 7351 firmware","amd/epyc 7371 firmware","amd/epyc 7401 firmware","amd/epyc 7451 firmware","amd/epyc 7501 firmware","amd/epyc 7551 firmware","amd/epyc 7571 firmware","amd/epyc 7601 firmware","amd/ryzen 5 pro 3400g firmware","amd/ryzen 5 3400g firmware","amd/ryzen 5 pro 3400ge firmware","amd/ryzen 5 pro 3350g firmware","amd/ryzen 5 pro 3350ge firmware","amd/ryzen 3 pro 3200g firmware","amd/ryzen 3 3200g firmware","amd/ryzen 3 3200ge firmware","amd/ryzen 3 pro 3200ge firmware","amd/athlon pro 300ge firmware","amd/athlon gold 3150ge firmware","amd/athlon gold pro 3150ge firmware","amd/athlon gold 3150g firmware","amd/athlon gold pro 3150g firmware","amd/athlon silver 3050ge firmware","amd/athlon silver pro 3125ge firmware","xen/xen","fedoraproject/fedora","microsoft/windows 10 1507","microsoft/windows 10 1607","microsoft/windows 10 1809","microsoft/windows 10 21h2","microsoft/windows 10 22h2","microsoft/windows 11 21h2","microsoft/windows 11 22h2","microsoft/windows 11 23h2","microsoft/windows server 2008","microsoft/windows server 2012","microsoft/windows server 2016","microsoft/windows server 2019","microsoft/windows server 2022 23h2"],"epss":{"score":0.11151,"percentile":0.95952,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 11.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/3","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/4","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/5","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/7","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/8","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/5","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/8","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/9","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/27/1","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/12","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/13","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/14","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/15","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/16","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/9","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/1","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/2","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/3","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/4","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://xenbits.xen.org/xsa/advisory-439.html","tags":["Third Party Advisory"],"source":"psirt@amd.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html","tags":["Mailing List","Third Party Advisory"],"source":"psirt@amd.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGZCACEHT6ZZZGG36QQMGROBM4FLWYJX/","tags":["Mailing List"],"source":"psirt@amd.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIOYP4ZOBML4RCUM3MHRFZUQL445MZM3/","tags":["Mailing List"],"source":"psirt@amd.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJTUVYZMP6BNF342DS3W7XGOGXC6JPN5/","tags":["Mailing List"],"source":"psirt@amd.com"},{"url":"https://security.netapp.com/advisory/ntap-20240531-0005/","source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7007","tags":["Vendor Advisory"],"source":"psirt@amd.com"},{"url":"https://www.debian.org/security/2023/dsa-5480","tags":["Third Party Advisory"],"source":"psirt@amd.com"},{"url":"https://www.debian.org/security/2023/dsa-5492","tags":["Third Party Advisory"],"source":"psirt@amd.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/3","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/4","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/5","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/7","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/25/8","tags":["Mailing List","Third Party 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Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/14","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/15","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/16","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/9","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/1","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/04/2","tags":["Mailing List","Third Party 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List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIOYP4ZOBML4RCUM3MHRFZUQL445MZM3/","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJTUVYZMP6BNF342DS3W7XGOGXC6JPN5/","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20240531-0005/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7007","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5480","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5492","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-20588","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."}