What’s Vulnerable › Vulnerabilities

CVE-2021-27084: Visual Studio Code Java Extension Pack Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 62.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-11 · updated 2026-08-19

Description

Visual Studio Code Java Extension Pack Remote Code Execution Vulnerability

Affected products

• Microsoft Visual Studio Code - Java Extension Pack: all versions
• Microsoft Visual Studio Code - Java Extension Pack: from 0.5.0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft Visual Studio Code - Java Extension Pack publication. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27084
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27084

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