MinorCritical vulnerability

CVE-2026-105959 (CVSS 7.5)

NVD · officialPublished Oct 16, 2026Risk 23/100

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 massive heap buffer overflow by sending a crafted max_encoders value in migration data.

Technical details

CVSS

7.5

AV:NetworkAC:HighPR:LowUI:NoneC:HighI:HighA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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