{"id":"CVE-2026-45657","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-45657","generatedAt":"2026-10-28T01:10:28.405Z","title":"Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.","description":"Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.","published":"2026-06-09T17:17:33.000Z","lastModified":"2026-07-23T08:10:00.000Z","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-122","CWE-416"],"affected":["microsoft/windows 11 23h2","microsoft/windows 11 24h2","microsoft/windows 11 25h2","microsoft/windows 11 26h1","microsoft/windows server 2022","microsoft/windows server 2025"],"epss":{"score":0.15478,"percentile":0.9678,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00974,"percentile":0.60426},{"date":"2026-10-25","score":0.15478,"percentile":0.96779}]},"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 15.5%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-10-25T00:00:00.000Z","detail":{"to":0.15478,"from":0.00974,"percentile":0.96779},"summary":"EPSS moved from 1.0% to 15.5% probability of exploitation in the next thirty days."}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45657","tags":["Vendor Advisory"],"source":"secure@microsoft.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45657","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."}