CVE-2025-23165

Low

Description

In Node.js, the `ReadFileUtf8` internal binding leaks memory due to a corrupted pointer in `uv_fs_s.file`: a UTF-16 path buffer is allocated but subsequently overwritten when the file descriptor is set. This results in an unrecoverable memory leak on every call. Repeated use can cause unbounded memory growth, leading to a denial of service. Impact: * This vulnerability affects APIs relying on `ReadFileUtf8` on Node.js release lines: v20 and v22.

SeverityLow

CVSS3.7

Exploit probability—

ProductNode

PublishedMay 19, 2025

First seenMay 19, 2025

Weakness typeCWE-401CWE-401

How to fix

Update

nodejs node4.*, 5.*, 6.*, 7.*, 8.*, 9.*, 10.*, 11.*, 12.*, 13.*, 14.*, 15.*, 16.*, 17.*, 18.*, 19.*, 21.* or later

Affected products

Product	Affected versions	Fixed in
nodejs node	4.0 ≤ v < 4., 5.0 ≤ v < 5., 6.0 ≤ v < 6., 7.0 ≤ v < 7., 8.0 ≤ v < 8., 9.0 ≤ v < 9., 10.0 ≤ v < 10., 11.0 ≤ v < 11., 12.0 ≤ v < 12., 13.0 ≤ v < 13., 14.0 ≤ v < 14., 15.0 ≤ v < 15., 16.0 ≤ v < 16., 17.0 ≤ v < 17., 18.0 ≤ v < 18., 19.0 ≤ v < 19., 20.0 ≤ v ≤ 20.19.1, 22.0 ≤ v ≤ 22.15.0, 21.0 ≤ v < 21.*	4., 5., 6., 7., 8., 9., 10., 11., 12., 13., 14., 15., 16., 17., 18., 19., 21.*

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