CVE-2016-3066: The spice-gtk widget allows remote authenticated users to obtain information from the host clipboard.

Routine

MEDIUM 6.5DOWNGRADE

CVE-2016-3066 is a medium-severity flaw (CVSS 6.5) affecting spice-gtk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The spice-gtk widget allows remote authenticated users to obtain information from the host clipboard.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-200
Published	2017-06-06
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: spice-gtk project

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

Am I affected?

Timeline

2017-06-06 18:29 UTCPublished CVE record published
2026-06-17 00:44 UTCUpdated Record last modified

spice-gtk project spice-gtk DOWNGRADE

Affected: 0.1.0 · 0.2 · 0.3 · 0.4 · 0.5 · 0.6 · 0.7 · 0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.1.0 (Debian / Ubuntu)

apt-cache madison spice-gtk sudo apt install spice-gtk=<VERSION_BEFORE_0.1.0> sudo apt-mark hold spice-gtk

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

dnf --showduplicates list spice-gtk sudo dnf downgrade spice-gtk-<VERSION_BEFORE_0.1.0> sudo dnf versionlock add spice-gtk

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-2016-3066?

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

Is CVE-2016-3066 being exploited?

CVE-2016-3066 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-2016-3066 affect?

CVE-2016-3066 affects spice-gtk. Severity is medium (CVSS 6.5). The spice-gtk widget allows remote authenticated users to obtain information from the host clipboard.

How urgent is CVE-2016-3066?

Priority 39/100. No elevated risk signals yet.

Related CVEs

CVE-2017-12194 CRITICAL 9.8 UPGRADE A flaw was found in the way spice-client processed certain messages sent from the server

References

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