CVE-2025-64118

MEDIUM

tar 7.5.1 - Information Exposure via Uninitialized Memory in .list with sync: true

Title source: llm
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v4 6.1
EPSS 0.0012
EPSS Percentile 2.1%
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

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-362 CWE-367
Status published
Products (2)
isaacs/node-tar = 7.5.1
npm/tar 7.5.1 - 7.5.2npm
Published Oct 30, 2025
Tracked Since Feb 18, 2026