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CVE-2025-64118— node-tar vulnerable to race condition leading to uninitialized memory exposure

Quick assessment

Affected
isaacs node-tar
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.

node-tar是isaacs个人开发者的一款用于文件压缩/解压缩的软件包。 node-tar 7.5.1版本存在安全漏洞，该漏洞源于使用.t读取tar条目内容时返回未初始化内存内容，可能导致信息泄露。

AI Predicted 5.5 Difficulty: Hard EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1213 · Data from Information Repositories
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I. Basic Information for CVE-2025-64118

Vulnerability Information
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Vulnerability Title
node-tar vulnerable to race condition leading to uninitialized memory exposure
Source: CVE Program / CVE List V5
Vulnerability Description
node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar entry contents returns uninitialized memory contents if tar file was changed on disk to a smaller size while being read. This vulnerability is fixed in 7.5.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
node-tar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
node-tar是isaacs个人开发者的一款用于文件压缩/解压缩的软件包。 node-tar 7.5.1版本存在安全漏洞，该漏洞源于使用.t读取tar条目内容时返回未初始化内存内容，可能导致信息泄露。
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
isaacs node-tar = 7.5.1 -

II. Public POCs for CVE-2025-64118

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III. Intelligence Information for CVE-2025-64118

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IV. Related Vulnerabilities

Same product: node-tar
Same vendor: isaacs
Same weakness: CWE-362

V. Comments for CVE-2025-64118

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