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CVE-2025-22873— Improper access to parent directory of root in os

Quick assessment

Affected
Go standard library os
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.

Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于通过打开以../结尾的文件名可以不当访问os.Root的父目录，可能导致路径遍历。

AI Predicted 5.3 Difficulty: Easy EPSS 0.24% · P13

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2025-22873

Vulnerability Information
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Vulnerability Title
Improper access to parent directory of root in os
Source: CVE Program / CVE List V5
Vulnerability Description
It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go存在安全漏洞，该漏洞源于通过打开以../结尾的文件名可以不当访问os.Root的父目录，可能导致路径遍历。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Go standard library os 0 ~ 1.23.9 -

II. Public POCs for CVE-2025-22873

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III. Intelligence Information for CVE-2025-22873

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IV. Related Vulnerabilities

Same product: os
Same vendor: Go standard library

V. Comments for CVE-2025-22873

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