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

This week

HIGH 8.6REMOTEWATCHLISTDOWNGRADE

CVE-2020-23793 is a high-severity flaw (CVSS 8.6) affecting spice-server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-862
Published	2023-08-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: spice-space

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-22 19:16 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

spice-space spice-server DOWNGRADE

Affected: 0.14.0-6el7_6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.14.0-6el7_6.1

1. Check installed version

apt-cache policy spice-server || rpm -q spice-server || spice-server --version

2. No fixed release: DOWNGRADE to a release before 0.14.0-6el7_6.1 (Debian / Ubuntu)

apt-cache madison spice-server sudo apt install spice-server=<VERSION_BEFORE_0.14.0-6el7_6.1> sudo apt-mark hold spice-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list spice-server sudo dnf downgrade spice-server-<VERSION_BEFORE_0.14.0-6el7_6.1> sudo dnf versionlock add spice-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-23793?

spice-server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-23793 being exploited?

CVE-2020-23793 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-23793 affect?

CVE-2020-23793 affects spice-server. Severity is high (CVSS 8.6). 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 oth

How urgent is CVE-2020-23793?

Priority 60/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

References

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