How severe is CVE-2021-25738?

CVE-2021-25738 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-25738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25738?

CVE-2021-25738 affects Kubernetes Java. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25738?

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

When was CVE-2021-25738 published?

CVE-2021-25738 was published on 2021-10-11 and last updated on 2026-06-17.

CVE-2021-25738

CVE-2021-25738 is a medium-severity vulnerability in Kubernetes Java with a CVSS 3.x base score of 6.7. 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-502.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Kubernetes Java
Published: 2021-10-11
Last modified: 2026-06-17

Description

Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.

Frequently asked questions

What is CVE-2021-25738?: Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.
How severe is CVE-2021-25738?: CVE-2021-25738 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-25738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25738?: CVE-2021-25738 affects Kubernetes Java. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25738 published?: CVE-2021-25738 was published on 2021-10-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kubernetes:java:*:*:*:*:*:*:*:*

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