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CVE-2020-12430

18
FAUCET Score

CVE-2020-12430 describes a memory leak vulnerability in libvirt versions 4.10.0 through 6.0.0, specifically within the qemuDomainGetStatsIOThread function. This flaw affects Red Hat Enterprise Linux and libvirt products. Unprivileged users with read-only access can exploit this by repeatedly using the virDomainListGetStats API, leading to a denial of service due to memory exhaustion. The vulnerability has a CVSS score of 6.5 (Medium), indicating a network-based attack with low complexity and no user interaction required, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.10.0, < 6.1.0CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.29%
Probability of exploitation in next 30 days
EPSS Percentile
81.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0229 is in the 93rd percentile among its peer group of 21,974 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 0.1 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 (3)

redhatpatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8 Advanced VirtualizationFixed in: virt:8.2/libvirt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8 Advanced VirtualizationFixed in: virt:8.1/libvirt

Vendor Advisories (1)

redhatCVE-2020-12430Moderate

libvirt: memory leak in domstats may allow read-only user to perform DoS attack

Feb 19, 2020

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPermissions RequiredVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchVendor Advisory
libvirt.org / git
lists.debian.org / debian-lts-announce/2024/04/msg00000.html
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2
security.netapp.com / advisory/ntap-20200518-0003
usn.ubuntu.com / 4371-1