How severe is CVE-2009-4011?

CVE-2009-4011 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2009-4011 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4011?

CVE-2009-4011 affects Dtc-xen Project Dtc-xen. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-4011?

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-2009-4011 published?

CVE-2009-4011 was published on 2019-11-09 and last updated on 2026-06-16.

CVE-2009-4011

CVE-2009-4011 is a high-severity vulnerability in Dtc-xen Project Dtc-xen with a CVSS 3.x base score of 8.1. 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-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Dtc-xen Project Dtc-xen
Published: 2019-11-09
Last modified: 2026-06-16

Description

dtc-xen 0.5.x before 0.5.4 suffers from a race condition where an attacker could potentially get a bash access as xenXX user on the dom0, and then access a potentially reuse an already opened VPS console.

Frequently asked questions

What is CVE-2009-4011?: dtc-xen 0.5.x before 0.5.4 suffers from a race condition where an attacker could potentially get a bash access as xenXX user on the dom0, and then access a potentially reuse an already opened VPS console.
How severe is CVE-2009-4011?: CVE-2009-4011 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2009-4011 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4011?: CVE-2009-4011 affects Dtc-xen Project Dtc-xen. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-4011?: 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-2009-4011 published?: CVE-2009-4011 was published on 2019-11-09 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:dtc-xen_project:dtc-xen:*:*:*:*:*:*:*:*

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