{"id":"CVE-2026-105959","title":"A flaw was found in spice-server","summary":"A flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a m…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-190"],"vendor":"Red Hat","product":"spice-server","affected":["spice-server (all versions)","spice (all versions)","spice (all versions)"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:23:18.623","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105959","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-105959","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554008","label":"secalert@redhat.com"},{"url":"https://gitlab.freedesktop.org/spice/spice/-/merge_requests/253","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"epss":0.0048,"epssPercentile":0.41223,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T14:04:30.322816Z"},"ingestedAt":"2026-10-16T12:05:46.478Z","slug":"CVE-2026-105959","body":"## Overview\n\nA flaw was found in spice-server. The GLZ encoder dictionary restore path truncates a size_t allocation size to int when calling the malloc callback, allowing a malicious authenticated SPICE client during VM live migration to trigger a massive heap buffer overflow by sending a crafted max_encoders value in migration data.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}