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CVE-2025-64712— Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write

Quick assessment

Affected
Unstructured-IO unstructured
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Unstructured是Unstructured开源的一个非结构化数据的开源预处理工具。 unstructured 0.18.18之前版本存在安全漏洞，该漏洞源于partition_msg函数存在路径遍历，可能导致处理恶意MSG文件时写入或覆盖任意文件。

CVSS 9.8 · Critical EPSS 0.62% · P47

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2025-64712

Vulnerability Information
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Vulnerability Title
Unstructured has Path Traversal via Malicious MSG Attachment that Allows Arbitrary File Write
Source: CVE Program / CVE List V5
Vulnerability Description
The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. Prior to version 0.18.18, a path traversal vulnerability in the partition_msg function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments. This issue has been patched in version 0.18.18.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Unstructured 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Unstructured是Unstructured开源的一个非结构化数据的开源预处理工具。 unstructured 0.18.18之前版本存在安全漏洞，该漏洞源于partition_msg函数存在路径遍历，可能导致处理恶意MSG文件时写入或覆盖任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Unstructured-IO unstructured < 0.18.18 -

II. Public POCs for CVE-2025-64712

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III. Intelligence Information for CVE-2025-64712

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Vendor Advisories for CVE-2025-64712 (1)

IV. Related Vulnerabilities

Same product: unstructured
Same vendor: Unstructured-IO
Same weakness: CWE-22

V. Comments for CVE-2025-64712

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