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AI / ML CVE-2026-0755

| EUVDEUVD-2026-4492 CRITICAL
OS Command Injection (CWE-78)
2026-01-23 zdi-disclosures@trendmicro.com GHSA-28qq-5f47-r5x2 GHSA-4h5r-5jm8-jxjm
9.8
CVSS 3.0 · NVD
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Send crafted input to execAsync method
  2. Exploit
    Inject malicious system command
  3. Execution
    Bypass input validation
  4. Impact
    Execute arbitrary code as service account

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

No special conditions — remote unauthenticated exploitation against default configurations of gemini-mcp-tool with exposed execAsync method accepting unsanitized user input.

Impact

CVSS 9.8, EPSS 0.52%. Part of a wave of MCP server command injection vulnerabilities discovered through systematic auditing of the MCP ecosystem.

Exploit ScenarioDerived

An attacker exploits the command injection to execute arbitrary commands on the host running the Gemini MCP integration.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
Patch available 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

gemini-mcp-tool has a command injection in execAsync allowing remote code execution on systems using the Gemini AI MCP integration.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:54 CVSS 9.8

Command injection in gemini-mcp-tool enables RCE via crafted MCP messages.

RemediationAI

Update the tool. Use parameterized command execution instead of shell interpolation.

Affected VersionsENISA

gemini-mcp-tool 1.1.2

Affected Packages

npm gemini-mcp-tool fix: 1.1.6

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The gemini-mcp-tool has a CWE-78 command injection in the execAsync function, part of a pattern of command injection vulnerabilities across MCP server implementations.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

gemini-mcp-tool execAsync Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of gemini-mcp-tool. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of the execAsync method. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27783.

Executive ViewAI

Why It Matters

A critical remote code execution vulnerability (CVE-2026-0755) in gemini-mcp-tool allows unauthenticated attackers to execute arbitrary commands on affected systems with a CVSS score of 9.8. Any organization running gemini-mcp-tool faces immediate risk of complete system compromise, data theft, and operational disruption. Immediate action is required to identify affected assets and implement mitigation measures.

Business Impact: Severe
Compensating Controls
  1. Network segmentation: restrict gemini-mcp-tool to isolated network zones with minimal trust; 2) WAF/IDS rules: block requests containing execAsync commands and shell metacharacters; 3) Disable feature: if available, disable execAsync functionality or remote execution capabilities; 4) Access controls: implement strict authentication and IP whitelisting for any access; 5) Monitoring: deploy behavioral analytics to detect anomalous command execution; 6) Process isolation: run gemini-mcp-tool with minimal privileges and within containers with restricted capabilities.

Threat Intelligence Overview

EPSS Score
0.5%
Top 34% exploitable
Threat Intel
1
1 source
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.5%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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