What is CVE-2026-105958?

CVE-2026-105958 is a high-severity vulnerability in Red Hat Enterprise Linux 6, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-10-16.

How severe is CVE-2026-105958?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Red Hat Enterprise Linux 6

CVE-2026-105958

A flaw was found in spice-server. Multiple migration data handlers use client-supplied offsets from SPICE_MSGC_MIGRATE_DATA messages without bounds validation, allowing a malicious authenticated SPICE client during VM live migration to read arbitrary heap memory or trigger heap corruption via out-of-bounds read and write operations on the message buffer.

Vulnerability class: Buffer Overflow

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2026-105958?: CVE-2026-105958 is a high-severity vulnerability in Red Hat Enterprise Linux 6, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-10-16.
How severe is CVE-2026-105958?: High severity. CVSS v3 base score is 7.5 out of 10.