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CVE-2025-64118

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Date: October 30, 2025

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.

Severity Score

Related Resources (8)

https://nvd.nist.gov/vuln/detail/CVE-2025-64118
https://github.com/isaacs/node-tar/commit/5330eb04bc43014f216e5c271b40d5c00d45224d
https://github.com/isaacs/node-tar/commit/5e1a8e638600d3c3a2969b4de6a6ec44fa8d74c9
https://github.com/isaacs/node-tar/issues/445
https://github.com/isaacs/node-tar/pull/446
https://github.com/isaacs/node-tar/security/advisories/GHSA-29xp-372q-xqph
https://github.com/isaacs/node-tar
https://www.mend.io/vulnerability-database/CVE-2025-64118

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-367

Top Fix

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Upgrade Version

Upgrade to version tar - 7.5.2

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): LOW
Availability (A): LOW

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