Security readout for executives and security teams
Plain-English summary
IntelliJ IDEA versions before 2026.2 may allow an unauthenticated party to inject input into a Remote Development session. The supplied CVSS rating is 10.0, indicating potential compromise of confidentiality, integrity, and availability. The sources provide little technical detail, so the exact attack path and prerequisites beyond Remote Development are unclear.
Executive priority
Treat this as an urgent remediation item for organizations using IntelliJ Remote Development. Rapidly identify pre-2026.2 installations and upgrade them, prioritizing environments with sensitive repositories or privileged credentials. The maximum CVSS score justifies urgency, although public evidence of exploitation is absent in the supplied sources.
Technical view
CVE-2026-64812 is classified as CWE-306, indicating missing authentication for a critical function. The CVSS vector describes network reachability, low complexity, no privileges, no user interaction, scope change, and high impact. The published description only confirms unauthorized input injection in Remote Development sessions before IntelliJ IDEA 2026.2.
Likely exposure
Exposure is most likely where IntelliJ IDEA versions earlier than 2026.2 participate in Remote Development sessions. The supplied evidence does not establish exposure for local-only use, specific editions, deployment configurations, or network boundaries. Inventory both client and remote development components before determining applicability.
Exploitation context
The supplied record does not establish active exploitation, and the CVE is not listed as KEV in the bundle. Its CVSS vector indicates a potentially unauthenticated, network-accessible attack without user interaction, but no exploit method, observed campaign, or technical proof is provided.
Researcher notes
Public details are sparse. The record identifies unauthorized input injection and missing authentication but does not explain the affected protocol, component boundary, input type, or observable indicators. Validate version and Remote Development usage without assuming all IntelliJ deployments are vulnerable. Reassess when JetBrains publishes deeper technical guidance.
Mitigation direction
- Upgrade affected IntelliJ IDEA installations and Remote Development environments to version 2026.2 or later.
- Check JetBrains security guidance for additional required component updates or configuration changes.
- Restrict Remote Development access to trusted networks and authenticated users until upgrades are verified.
- Prioritize systems handling source code, credentials, signing material, or production access.
Validation and detection
- Inventory IntelliJ IDEA versions used locally and across Remote Development hosts.
- Confirm every relevant installation reports version 2026.2 or later.
- Identify externally reachable or broadly accessible Remote Development services.
- Review authentication, session, and network logs for unexplained Remote Development activity.
- Monitor JetBrains guidance for clarified affected configurations and detection information.
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.
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-64812 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96JetBrainsVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.jetbrains.com/privacy-security/issues-fixed/CVE reference, JetBrains
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.