How severe is CVE-2009-0036?

CVE-2009-0036 has a CVSS 2.0 base score of 4.4, rated medium severity.

Is CVE-2009-0036 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0036?

CVE-2009-0036 affects Libvirt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-0036?

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

When was CVE-2009-0036 published?

CVE-2009-0036 was published on 2009-02-11 and last updated on 2026-06-16.

CVE-2009-0036

CVE-2009-0036 is a medium-severity vulnerability in Libvirt with a CVSS 2.0 base score of 4.4. 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 4.4)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libvirt
Published: 2009-02-11
Last modified: 2026-06-16

Description

Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the header, related to use of uninitialized memory in a validation check.

Frequently asked questions

What is CVE-2009-0036?: Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the header, related to use of uninitialized memory in a validation check.
How severe is CVE-2009-0036?: CVE-2009-0036 has a CVSS 2.0 base score of 4.4, rated medium severity.
Is CVE-2009-0036 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0036?: CVE-2009-0036 affects Libvirt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-0036?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0036 published?: CVE-2009-0036 was published on 2009-02-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:libvirt:libvirt:0.5.1:*:*:*:*:*:*:*

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