{"id":"CVE-2026-48914","title":"A flaw was found in QEMU's virtio-blk device","summary":"A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by su…","severity":"medium","cvss":6.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","cwe":["CWE-122"],"published":"2026-06-12","updated":"2026-07-13","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48914","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-48914","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488283","label":"secalert@redhat.com"},{"url":"https://lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00158,"epssPercentile":0.05424,"ingestedAt":"2026-07-13T10:25:38.737Z","slug":"CVE-2026-48914","body":"## Overview\n\nA flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":36.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}