{"id":"CVE-2026-18917","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-18917","generatedAt":"2026-10-28T04:16:56.906Z","title":"An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler.","description":"A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.","published":"2026-08-20T10:16:41.000Z","lastModified":"2026-10-27T10:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-190"],"affected":[],"epss":{"score":0.00182,"percentile":0.07671,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:68509","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68510","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68511","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68513","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68514","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68594","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:69114","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:69131","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:74424","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:75583","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-18917","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2520161","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-18917","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."}