Is CVE-2013-4154 in the CISA KEV catalog?

No. CVE-2013-4154 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-4154?

CVE-2013-4154 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2013-4154?

CVE-2013-4154 has an EPSS score of 2.20% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-4154?

Upgrade libvirt on debian 11 to 1.1.0-4 or later.

CVE & CISA-KEV Catalog

CVE-2013-4154

MEDIUMEPSS 80th pctl

4.3

CVSS v2

NVD

Description

The qemuAgentCommand function in libvirt before 1.1.1, when a guest agent is not configured, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to "agent based cpu (un)plug," as demonstrated by the "virsh vcpucount foobar --guest" command.

How to fix

Remediation Available

libvirtDebian

Fixed in:1.1.0-4CVE-2013-4154

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.20%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Patch2

Exploit1

bugzilla.redhat.com

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.