Security readout for executives and security teams
Plain-English summary
This CVE affects JetBrains IntelliJ IDEA versions before 2021.1. The documented impact is denial of service from unbounded resource allocation, meaning the application could consume excessive resources and become unavailable. The source bundle does not provide CVSS, exploit details, or business-critical remote-exposure evidence, so urgency depends on where older IDEA installations remain in use.
Executive priority
Treat this as a hygiene-driven developer endpoint remediation item unless older IDEA versions support critical workflows. It is not supported as an emergency from the provided evidence because there is no CVSS score, KEV listing, or cited active exploitation.
Technical view
CVE-2021-30504 is a JetBrains IntelliJ IDEA denial-of-service issue fixed by the 2021.1 version boundary. The root cause is described only as unbounded resource allocation. No CWE, CVSS vector, trigger conditions, or affected component details are present in the provided sources.
Likely exposure
Exposure is most likely on developer workstations or environments running JetBrains IntelliJ IDEA before 2021.1. The provided data does not identify server products, cloud services, plugins, or other JetBrains IDEs as affected.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not listed as KEV. Public evidence provided here only supports a denial-of-service impact description, without exploit maturity, attack vector, or user-interaction detail.
Researcher notes
The record is sparse. Key unknowns include trigger path, affected component, privilege requirements, and whether malicious project content or local interaction is needed. Analysis should stay anchored to IntelliJ IDEA before 2021.1 and denial of service only.
Mitigation direction
- Upgrade IntelliJ IDEA installations to version 2021.1 or later.
- Review JetBrains' Q1 2021 security bulletin for vendor-specific guidance.
- Prioritize older IDEA installations on shared or operationally sensitive developer systems.
- Remove unsupported or unused IntelliJ IDEA installations from managed assets.
Validation and detection
- Inventory JetBrains IntelliJ IDEA versions across developer endpoints.
- Flag installations with versions earlier than 2021.1.
- Confirm remediation by verifying the installed version after upgrade.
- Check endpoint management records for unmanaged IntelliJ IDEA copies.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-30504 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.jetbrains.com/CVE reference · x_refsource_MISC
- https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.