How severe is CVE-2017-1000056?

CVE-2017-1000056 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-1000056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000056?

CVE-2017-1000056 primarily affects Kubernetes. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-1000056?

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

When was CVE-2017-1000056 published?

CVE-2017-1000056 was published on 2017-07-17 and last updated on 2026-06-17.

CVE-2017-1000056

CVE-2017-1000056 is a critical-severity vulnerability in Kubernetes with a CVSS 3.x base score of 9.8. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Kubernetes
Published: 2017-07-17
Last modified: 2026-06-17

Description

Kubernetes version 1.5.0-1.5.4 is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to make use of any existing PodSecurityPolicy object.

Frequently asked questions

What is CVE-2017-1000056?: Kubernetes version 1.5.0-1.5.4 is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to make use of any existing PodSecurityPolicy object.
How severe is CVE-2017-1000056?: CVE-2017-1000056 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-1000056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000056?: CVE-2017-1000056 primarily affects Kubernetes. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-1000056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-1000056 published?: CVE-2017-1000056 was published on 2017-07-17 and last updated on 2026-06-17.

References

https://github.com/kubernetes/kubernetes/issues/43459

Affected products (5)

cpe:2.3:a:kubernetes:kubernetes:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:kubernetes:kubernetes:1.5.4:*:*:*:*:*:*:*

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