How severe is CVE-2008-4405?

CVE-2008-4405 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2008-4405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4405?

CVE-2008-4405 affects Citrix Xen. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4405?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-4405 published?

CVE-2008-4405 was published on 2008-10-03 and last updated on 2026-06-16.

CVE-2008-4405

CVE-2008-4405 is a high-severity vulnerability in Citrix Xen with a CVSS 2.0 base score of 7.2. 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-264.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Citrix Xen
Published: 2008-10-03
Last modified: 2026-06-16

Description

xend in Xen 3.0.3 does not properly limit the contents of the /local/domain xenstore directory tree, and does not properly restrict a guest VM's write access within this tree, which allows guest OS users to cause a denial of service and possibly have unspecified other impact by writing to (1) console/tty, (2) console/limit, or (3) image/device-model-pid. NOTE: this issue was originally reported as an issue in libvirt 0.3.3 and xenstore, but CVE is considering the core issue to be related to Xen.

Frequently asked questions

What is CVE-2008-4405?: xend in Xen 3.0.3 does not properly limit the contents of the /local/domain xenstore directory tree, and does not properly restrict a guest VM's write access within this tree, which allows guest OS users to cause a denial of service and possibly have unspecified other impact by writing to (1) console/tty, (2) console/limit, or (3) image/device-model-pid. NOTE: this issue was originally reported as an issue in libvirt 0.3.3 and xenstore, but CVE is considering the core issue to be related to Xen.
How severe is CVE-2008-4405?: CVE-2008-4405 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2008-4405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4405?: CVE-2008-4405 affects Citrix Xen. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4405?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-4405 published?: CVE-2008-4405 was published on 2008-10-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:citrix:xen:3.0.3:*:*:*:*:*:*:*

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CVE-2011-1898 — High (CVSS 7.4): Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt…
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