How severe is CVE-2015-6927?

CVE-2015-6927 has a CVSS 2.0 base score of 3.6, rated low severity.

Is CVE-2015-6927 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6927?

CVE-2015-6927 affects Openvz Vzctl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-6927?

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

When was CVE-2015-6927 published?

CVE-2015-6927 was published on 2015-09-28 and last updated on 2026-06-17.

CVE-2015-6927

CVE-2015-6927 is a low-severity vulnerability in Openvz Vzctl with a CVSS 2.0 base score of 3.6. 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-59.

Key facts

Severity: Low (CVSS 2.0 base score 3.6)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Openvz Vzctl
Published: 2015-09-28
Last modified: 2026-06-17

Description

vzctl before 4.9.4 determines the virtual environment (VE) layout based on the presence of root.hdd/DiskDescriptor.xml in the VE private directory, which allows local simfs container (CT) root users to change the root password for arbitrary ploop containers, as demonstrated by a symlink attack on the ploop container root.hdd file and then access a control panel.

Frequently asked questions

What is CVE-2015-6927?: vzctl before 4.9.4 determines the virtual environment (VE) layout based on the presence of root.hdd/DiskDescriptor.xml in the VE private directory, which allows local simfs container (CT) root users to change the root password for arbitrary ploop containers, as demonstrated by a symlink attack on the ploop container root.hdd file and then access a control panel.
How severe is CVE-2015-6927?: CVE-2015-6927 has a CVSS 2.0 base score of 3.6, rated low severity.
Is CVE-2015-6927 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6927?: CVE-2015-6927 affects Openvz Vzctl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-6927?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-6927 published?: CVE-2015-6927 was published on 2015-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openvz:vzctl:*:*:*:*:*:*:*:*

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