CVE-2025-63604Public exploitNetwork attack vector

Unauthenticated code execution via exposed Python built-ins

Published Nov 18, 2025 · Updated Nov 18, 2025

Code injection in baryhuang mcp-server-aws-resources-python 0.1.0 allows remote attackers to execute arbitrary Python code through crafted queries. AWSResourceQuerier.execute_query compiles attacker-controlled input in exec mode, exposes import, getattr, and hasattr, and passes the result to exec without a restrictive namespace. Network access to the MCP query tool requires no authentication or user interaction; demonstrated payloads read files and process environment variables, including AWS credential material.

CVSS severity6.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in baryhuang mcp-server-aws-resources-python 0.1.0 allows remote attackers to execute arbitrary Python code through crafted queries. AWSResourceQuerier.execute_query compiles attacker-controlled input in exec mode, exposes import, getattr, and hasattr, and passes the result to exec without a restrictive namespace. Network access to the MCP query tool requires no authentication or user interaction; demonstrated payloads read files and process environment variables, including AWS credential material.

The record

CVE
CVE-2025-63604
Published
Nov 18, 2025
Updated
Nov 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.006Python

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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