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AI / ML CVE-2026-0757

HIGH
OS Command Injection (CWE-78)
2026-01-23 zdi-disclosures@trendmicro.com
8.8
CVSS 3.0 · NVD
View

Attack ChainAIDerived

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

  1. Access
    Craft malicious MCP config object
  2. Delivery
    Host on attacker-controlled webpage
  3. Exploit
    User visits malicious page
  4. Execution
    Command injection in execute-command processing
  5. Impact
    Sandbox escape with arbitrary code execution

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

User must visit attacker-controlled webpage or open malicious file containing crafted MCP config object; MCP Manager for Claude Desktop must be installed and processing user-supplied MCP configuration without proper command validation.

Impact

CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitable via remote/network.

Exploit ScenarioDerived

A remote attacker could exploit this vulnerability to bypass the sandbox on affected installations of MCP Manager for Claude Desktop.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

MCP Manager for Claude Desktop is vulnerable to command injection through improperly validated MCP config objects, enabling remote attackers to escape the sandbox and execute arbitrary code on affected systems. The vulnerability requires user interaction such as visiting a malicious page or opening a malicious file, and currently lacks an available patch. An attacker can leverage this flaw to achieve code execution with medium integrity privileges in the context of the running process.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:54 CVSS 8.8

that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of MCP config objects. The issue results from the lack of proper validation of a user-supplied string is affected by os command injection (CVSS 8.8).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affected ProductsAI

Product: that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of MCP config objects. The issue results from the lack of proper validation of a user-supplied string.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

This vulnerability (CWE-78: OS Command Injection) affects that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of MCP config objects. The issue results from the lack of proper validation of a user-supplied string. MCP Manager for Claude Desktop execute-command Command Injection Sandbox Escape Vulnerability. This vulnerability allows remote attackers to bypass the sandbox on affected installations of MCP Manager for Claude Desktop. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of MCP config objects. The issue results from the lack of proper validation of a user-supplied stri

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/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
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

MCP Manager for Claude Desktop execute-command Command Injection Sandbox Escape Vulnerability. This vulnerability allows remote attackers to bypass the sandbox on affected installations of MCP Manager for Claude Desktop. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of MCP config objects. 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 escape the sandbox and execute arbitrary code in the context of the current process at medium integrity. Was ZDI-CAN-27810.

Executive ViewAI

Why It Matters

A critical sandbox escape vulnerability in MCP Manager for Claude Desktop allows attackers to execute arbitrary commands on affected systems through malicious files or web pages. This poses a significant risk to organizations using Claude Desktop, as successful exploitation could lead to unauthorized system access and data compromise if users interact with attacker-controlled content.

Business Impact: High
Compensating Controls

Disable MCP Manager features if not operationally required; implement application whitelisting to prevent unauthorized command execution; restrict Claude Desktop to trusted networks using network segmentation; enforce strict file download policies and disable automatic file opening; implement endpoint detection and response (EDR) solutions with behavioral monitoring for suspicious process execution; educate users to avoid opening files from untrusted sources and visiting suspicious websites.

Threat Intelligence Overview

EPSS Score
0.1%
Top 77% exploitable
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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
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.

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