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

Q: How do I fix CVE-2017-12194?

spice-gtk: upgrade to newer than 0.34. Exact commands for each OS are on this page.

Q: Is CVE-2017-12194 being exploited?

CVE-2017-12194 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-12194 affect?

CVE-2017-12194 affects spice-gtk. Severity is critical (CVSS 9.8). A flaw was found in the way spice-client processed certain messages sent from the server. An attacker, having control of malicious spice-server, could use this flaw to crash the client or execute arbitrary code with permissions of the user

Q: How urgent is CVE-2017-12194?

Priority 62/100. Critical severity; EPSS top 7%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2017-12194 is a critical-severity flaw (CVSS 9.8) affecting spice-gtk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in the way spice-client processed certain messages sent from the server. An attacker, having control of malicious spice-server, could use this flaw to crash the client or execute arbitrary code with permissions of the user running the client. spice-gtk versions through 0.34 are believed to be vulnerable.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.2% (top 7%)
CISA exploited list	No
Weakness	CWE-121, CWE-20
Published	2018-03-14
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

2018-03-14 21:29 UTCPublished CVE record published
2026-06-17 01:02 UTCUpdated Record last modified

spice-gtk project spice-gtk UPGRADE

Affected: <= 0.34

Fixed in: newer than 0.34

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.34 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spice-gtk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spice-gtk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2017-12194?

spice-gtk: upgrade to newer than 0.34. Exact commands for each OS are on this page.

Is CVE-2017-12194 being exploited?

CVE-2017-12194 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-2017-12194 affect?

CVE-2017-12194 affects spice-gtk. Severity is critical (CVSS 9.8). A flaw was found in the way spice-client processed certain messages sent from the server. An attacker, having control of malicious spice-server, could use this flaw to crash the client or execute arbitrary code with permissions of the user

How urgent is CVE-2017-12194?

Priority 62/100. Critical severity; EPSS top 7%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-3066 MEDIUM 6.5 DOWNGRADE The spice-gtk widget allows remote authenticated users to obtain information from the host clipboard.

References

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