{"id":"CVE-2026-57965","title":"Spice-vdagent: integer overflow in udscs_write() leading to heap buffer overflow","summary":"A flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to c…","severity":"medium","cvss":5.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","cvssSource":"cna","cwe":["CWE-190"],"vendor":"Red Hat","product":"spice-vdagent","affected":["spice-vdagent (all versions)","spice-vdagent (all versions)","spice-vdagent (all versions)","mingw-spice-vdagent (all versions)","spice-vdagent (all versions)","spice-vdagent (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-29T10:43:01.020584Z"},"published":"2026-06-29","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:16:53.039Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57965","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-57965"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2493581","label":"RHBZ#2493581"}],"tags":["cve.org"],"epss":0.00113,"epssPercentile":0.01444,"ingestedAt":"2026-11-05T23:41:31.950Z","slug":"CVE-2026-57965","body":"## Overview\n\nA flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine. This issue requires the SPICE host to be untrusted or compromised for exploitation.\n\n## Affected\n\n- `spice-vdagent (all versions)`\n- `spice-vdagent (all versions)`\n- `spice-vdagent (all versions)`\n- `mingw-spice-vdagent (all versions)`\n- `spice-vdagent (all versions)`\n- `spice-vdagent (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":28.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}