Medium severity · published Oct 30, 2025
CVE-2025-64118
node-tar vulnerable to race condition leading to uninitialized memory exposure
6.1
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node-tar · isaacs
= 7.5.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64118
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64118
github.com
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
https://github.com/isaacs/node-tar/security/advisories/GHSA-29xp-372q-xqph
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