{"id":"CVE-2026-83888","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-83888","generatedAt":"2026-10-28T03:42:50.829Z","title":"Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.","description":"Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.","published":"2026-10-13T19:20:40.000Z","lastModified":"2026-10-21T13:13:48.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-126"],"affected":["microsoft/windows 10 1607","microsoft/windows 10 1809","microsoft/windows 10 21h2","microsoft/windows 10 22h2","microsoft/windows 11 23h2","microsoft/windows 11 24h2","microsoft/windows 11 25h2","microsoft/windows 11 26h1","microsoft/windows 11 26h2","microsoft/windows server 2012","microsoft/windows server 2016","microsoft/windows server 2019","microsoft/windows server 2022","microsoft/windows server 2025"],"epss":{"score":0.00977,"percentile":0.61966,"date":"2026-10-27","history":[{"date":"2026-10-14","score":0.00887,"percentile":0.58422}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-21T13:15:08.000Z","detail":{"from":"6.5","score":"9.8","severity":"CRITICAL","fromSeverity":"MEDIUM"},"summary":"Now scored CVSS 9.8 CRITICAL (was 6.5)."},{"kind":"new","label":"New CVE","at":"2026-10-13T19:20:40.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-13T19:20:39.710Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83888","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-83888","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."}