How severe is CVE-2021-31938?

CVE-2021-31938 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31938 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31938?

CVE-2021-31938 affects Microsoft Kubernetes Tools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31938?

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-2021-31938 published?

CVE-2021-31938 was published on 2021-06-08 and last updated on 2026-06-17.

CVE-2021-31938

CVE-2021-31938 is a high-severity vulnerability in Microsoft Kubernetes Tools with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 6.8
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Kubernetes Tools
Published: 2021-06-08
Last modified: 2026-06-17

Description

Microsoft VsCode Kubernetes Tools Extension Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2021-31938?: Microsoft VsCode Kubernetes Tools Extension Elevation of Privilege Vulnerability
How severe is CVE-2021-31938?: CVE-2021-31938 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31938 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31938?: CVE-2021-31938 affects Microsoft Kubernetes Tools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31938?: 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-2021-31938 published?: CVE-2021-31938 was published on 2021-06-08 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31938

Affected products (1)

cpe:2.3:a:microsoft:kubernetes_tools:-:*:*:*:*:*:*:*