What is CVE-2020-23793?

CVE-2020-23793 is a high-severity vulnerability in Spice-Space Spice-Server, classified under Missing Authorization. CVSS score: 8.6/10. Published 2023-08-22.

How severe is CVE-2020-23793?

High severity. CVSS v3 base score is 8.6 out of 10.

Auth bypass in Spice-Space Spice-Server

CVE-2020-23793

An issue was discovered in spice-server spice-server-0.14.0-6.el7_6.1.x86_64 of Redhat's VDI product. There is a security vulnerablility that can restart KVMvirtual machine without any authorization. It is not yet known if there will be other other effects.

Vulnerability class: Broken Access Control

Published 2023-08-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Spice-Space Spice-Server — versions 0.14.0-6el7_6.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

github.com/zelat/spice-security-issues (Exploit)

Frequently asked questions

What is CVE-2020-23793?: CVE-2020-23793 is a high-severity vulnerability in Spice-Space Spice-Server, classified under Missing Authorization. CVSS score: 8.6/10. Published 2023-08-22.
How severe is CVE-2020-23793?: High severity. CVSS v3 base score is 8.6 out of 10.