CVE-2012-4423

CVE-2012-4423 is a medium-severity vulnerability in Redhat Libvirt with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The virNetServerProgramDispatchCall function in libvirt before 0.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and segmentation fault) via an RPC call with (1) an event as the RPC number or (2) an RPC number whose value is in a "gap" in the RPC dispatch table.

Frequently asked questions

What is CVE-2012-4423?
The virNetServerProgramDispatchCall function in libvirt before 0.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and segmentation fault) via an RPC call with (1) an event as the RPC number or (2) an RPC number whose value is in a "gap" in the RPC dispatch table.
How severe is CVE-2012-4423?
CVE-2012-4423 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-4423 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4423?
CVE-2012-4423 primarily affects Redhat Libvirt. In total, 71 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4423?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4423 published?
CVE-2012-4423 was published on 2012-11-19 and last updated on 2026-06-16.

References

Affected products (71)

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