CVE-2014-3633

No known exploitation. EPSS puts it in the 86th percentile. A vendor fix is available.

CVSS 2.05.8Medium EPSS percentile86th2.8% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2014-10-06Updated 2026-05-06Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

The qemuDomainGetBlockIoTune function in qemu/qemu_driver.c in libvirt before 1.2.9, when a disk has been hot-plugged or removed from the live image, allows remote attackers to cause a denial of service (crash) or read sensitive heap information via a crafted blkiotune query, which triggers an out-of-bounds read.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS86th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

2.8% chance of exploitation activity in the next 30 days, which ranks it in the 86th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

6 events over 4280 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2026-05-06Patch availablerecord updated
2014-10-06Publishedweakness classified, att&ck mapped

Affected products

Red Hat Inc.commercial · USaka red hat
- Red Hat Enterprise LinuxOSOn-premOperating Systems / linux-distro
canonicalcommercial · GBaka canonical ltd.
- ubuntu linuxOSOn-premOperating Systems / linux-distro
libvirtoss-project
- libvirtOn-premCloud & SaaS / virtualization

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:N/AC:M/Au:N/C:P/I:N/A:P

Scored 5.8 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity MediumSome conditions must be met
Authentication NoneNo authentication required

Impact if exploited

Confidentiality PartialSome information is disclosed
Integrity NoneNo integrity impact
Availability PartialReduced performance or service disruption

Weaknesses

CWE-119No name in the record

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Initial AccessT1190Exploit Public-Facing Applicationhigh confidence
Privilege EscalationT1068Exploitation for Privilege Escalationhigh confidence

Sources

References in the record

And 8 more references. See all after sign-in

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