How severe is CVE-2014-3633?

CVE-2014-3633 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2014-3633 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3633?

CVE-2014-3633 primarily affects Libvirt. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3633?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-3633 published?

CVE-2014-3633 was published on 2014-10-06 and last updated on 2026-06-17.

CVE-2014-3633

CVE-2014-3633 is a medium-severity vulnerability in Libvirt with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libvirt
Published: 2014-10-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2014-3633?: 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.
How severe is CVE-2014-3633?: CVE-2014-3633 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2014-3633 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3633?: CVE-2014-3633 primarily affects Libvirt. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-3633?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-3633 published?: CVE-2014-3633 was published on 2014-10-06 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:canonical:ubuntu_linux:10.04:*:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:a:libvirt:libvirt:*:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:libvirt:libvirt:1.2.7:*:*:*:*:*:*:*

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