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CVE-2013-4153

15
FAUCET Score

CVE-2013-4153 describes a double free vulnerability within the qemuAgentGetVCPUs function in libvirt versions 1.0.6 through 1.1.0, specifically impacting Red Hat libvirt. This flaw allows remote attackers to trigger a denial of service, causing a daemon crash, by sending a crafted CPU count request. The vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, resulting in a denial of service without requiring authentication. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.6CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:1.0.6:*:*:*:*:*:*:*
1.1.0CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:1.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 60th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-4153Important

libvirt: double free of returned JSON array in qemuAgentGetVCPUs()

Jul 16, 2013

References

libvirt.org / git
libvirt.org / news.html
openwall.com / lists/oss-security/2013/07/19/11
Patch
bugzilla.redhat.com / show_bug.cgi
Exploit
bugzilla.redhat.com / show_bug.cgi
Patch