Security readout for executives and security teams
Plain-English summary
A flaw in IntelliJ IDEA Remote Development could allow unauthorized modification of settings. Versions before 2026.2 are identified as affected. The CVSS 10.0 rating indicates potentially severe confidentiality, integrity, and availability impact, but the supplied sources provide no attack mechanics or confirmed exploitation.
Executive priority
Treat this as an urgent patching and exposure-validation issue for organizations using IntelliJ IDEA Remote Development. Prioritize internet-accessible or broadly reachable environments. The maximum CVSS score warrants rapid action, although public evidence currently does not establish active exploitation or the vulnerability’s practical attack conditions.
Technical view
CVE-2026-64813 concerns unauthorized settings modification during an IntelliJ IDEA Remote Development session. Its CVSS 3.1 vector describes network access, low complexity, no privileges, no user interaction, changed scope, and high impact across confidentiality, integrity, and availability. The limited disclosure does not identify prerequisites, affected settings, or technical root cause beyond CWE-602.
Likely exposure
Exposure is most likely where IntelliJ IDEA versions earlier than 2026.2 are used for Remote Development. Systems not using that feature may have lower practical exposure, but the supplied sources do not establish this conclusively. The structured affected-version data is incomplete or inconsistent, so verify exact applicability with JetBrains.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source confirms active exploitation or public exploit availability. The CVSS vector indicates a theoretically remote, unauthenticated attack path, but the disclosure lacks sufficient detail to determine real-world reachability or attacker requirements.
Researcher notes
Public technical detail is sparse. The CWE-602 classification suggests security enforcement may have depended improperly on client-side controls, but that interpretation is not confirmed by a disclosed root-cause analysis. The version field in the supplied structured affected data lists “0” while the description says before 2026.2; rely on JetBrains clarification for precise applicability.
Mitigation direction
- Inventory IntelliJ IDEA installations and identify versions earlier than 2026.2.
- Upgrade affected IntelliJ IDEA installations to version 2026.2 or later.
- Confirm the applicable release and remediation details against current JetBrains guidance.
- Restrict or suspend Remote Development exposure where immediate upgrading is not possible.
Validation and detection
- Verify every Remote Development endpoint reports IntelliJ IDEA 2026.2 or later.
- Confirm older installations are upgraded, isolated, or no longer providing Remote Development.
- Review available audit records for unexpected settings changes during Remote Development sessions.
- Recheck the JetBrains advisory for clarified affected editions, prerequisites, and detection guidance.
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-602: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2026-64813 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.
Client-Side Enforcement of Server-Side Security
Client-Side Enforcement of Server-Side Security represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.