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CVE-2025-64118

node-tar vulnerable to race condition leading to uninitialized memory exposure

Published: Oct 30, 2025Updated: Nov 4, 2025 Sources: CVE List NVD GHSA BDUCWE-362
NVD MITRE
7.0CVSSHIGH
EPSS Score
0.1%
Top 97.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:HC:HI:LA:L
Exploitability
AV:LAccess Vector
Local
AC:HAccess Complexity
High
Impact
C:HConfidentiality
H
I:LIntegrity
L
A:LAvailability
L
Open in CVSS calculator →

Weaknesses

CWE-362CWE-367

Affected Products

node-tarisaacs
Library
OSS Libraries / npm
tarnpmOSS Libraries
Node.jsNode.js FoundationOSS Libraries
node-tarNode.js FoundationOSS Libraries
isaacsindividual-devOSS Librariesaka isaacs node packages, isaacs tar
npmpackage-ecosystemOSS Libraries
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/isaacs/node-tar/commit/5330eb04bc43014f216e5c271b40d5c00d45224d
github.com
https://github.com/isaacs/node-tar/issues/445
github.com
https://github.com/isaacs/node-tar/pull/446
github.com
and 7 more references View all →

Timeline

Published
Oct 30, 2025
Last Updated
Nov 4, 2025

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