CVE-2025-68269: 
JetBrains IntelliJ IDEA vulnerability analysis and mitigation

CVE-2025-68269 is a missing confirmation vulnerability in JetBrains IntelliJ IDEA that allows untrusted remote projects to be opened over SSH without proper user verification. It affects all versions of IntelliJ IDEA prior to 2025.3. The vulnerability was published on December 16, 2025, and a patch was made available in version 2025.3. It carries a CVSS v3.1 base score of 5.4 (Medium) (Red Hat Advisory, JetBrains).

The root cause is classified as CWE-349 (Acceptance of Extraneous Untrusted Data With Trusted Data), where IntelliJ IDEA fails to present a confirmation dialog before opening remote projects accessed via SSH. This missing verification step means the IDE can be directed to load a remote project from an attacker-controlled SSH server without the user explicitly acknowledging the untrusted source. Exploitation requires user interaction — specifically, a user must be socially engineered or otherwise induced to initiate an SSH-based remote project connection to a malicious host (Red Hat Advisory, JetBrains).

Successful exploitation could allow an attacker to have IntelliJ IDEA load and execute project configuration files (e.g., build scripts, run configurations) from a malicious remote server, potentially leading to unauthorized code execution within the developer's environment, exposure of sensitive source code or credentials, and injection of malicious code into the development workflow. The confidentiality and integrity impacts are rated low, with no direct availability impact, but the risk to software supply chain integrity is notable given the developer-focused target (Red Hat Advisory).

There is no public proof-of-concept exploit and no evidence of in-the-wild exploitation at this time. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. The EPSS score is extremely low at 0.000010, reflecting minimal current exploitation probability. Exploitation requires user interaction via social engineering to connect to a malicious SSH project (Red Hat Advisory).

1. Setup malicious SSH server: An attacker configures a remote server with SSH access and a crafted IntelliJ IDEA project containing malicious build scripts or run configurations (e.g., a build.gradle or .idea/ directory with embedded commands).
2. Social engineering: The attacker convinces a target developer to open a remote project via SSH in IntelliJ IDEA — for example, by sharing a seemingly legitimate project link or impersonating a colleague.
3. Exploit missing confirmation: In vulnerable versions (before 2025.3), IntelliJ IDEA opens the remote SSH project without presenting a trust confirmation dialog, silently loading the attacker's project files.
4. Achieve code execution: When the developer interacts with the project (e.g., runs a build or sync), the malicious scripts execute in the developer's local environment, potentially exfiltrating credentials, installing backdoors, or tampering with source code (Red Hat Advisory).

• Network: Unexpected outbound SSH connections from a developer workstation to unfamiliar or external IP addresses/hostnames initiated by the IntelliJ IDEA process.
• Process: Unusual child processes spawned by IntelliJ IDEA or its JVM (e.g., shell commands, curl, wget, python) following the opening of a remote project.
• File System: Unexpected or modified build scripts (e.g., build.gradle, pom.xml, Makefile) or .idea/ configuration files originating from a remote SSH source; new or modified files in the project directory shortly after SSH project load.
• Logs: IntelliJ IDEA logs showing SSH remote project connections to unrecognized hosts without corresponding user-initiated trust prompts.

The primary remediation is to upgrade JetBrains IntelliJ IDEA to version 2025.3 or later, which introduces the missing confirmation dialog for remote SSH project connections (JetBrains). As interim measures, developers should avoid opening remote projects from untrusted or unverified SSH sources, implement strict SSH connection policies, and use network segmentation to limit the IDE's outbound connectivity. Security awareness training for development teams on the risks of social engineering targeting IDE workflows is also recommended.