CVE-2026-86502

Local code execution via unauthenticated IJent gRPC

Published Sep 7, 2026 · Updated Sep 9, 2026

Missing authentication in IntelliJ IDEA before 2026.2.2 allows local users to execute code through the IJent gRPC server. The Remote Development host exposes IJent gRPC operations without TLS or client authentication, accepting untrusted local requests as authorized. Access to a Remote Development host is required, and successful exploitation runs code with the backend IDE's privileges.

CVSS severity8.4
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in IntelliJ IDEA before 2026.2.2 allows local users to execute code through the IJent gRPC server. The Remote Development host exposes IJent gRPC operations without TLS or client authentication, accepting untrusted local requests as authorized. Access to a Remote Development host is required, and successful exploitation runs code with the backend IDE's privileges.

The record

CVE
CVE-2026-86502
Published
Sep 7, 2026
Updated
Sep 9, 2026
Vendor
JetBrains
Product
IntelliJ IDEA
Classifications
CWE-306
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

JetBrains · IntelliJ IDEAversion=0 <2026.2.2

Published CVSS scores

8.4JetBrainsCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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