Vulnerability in Nodejs Node
CVE-2025-23165
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.
EPSS: 0.005 (38.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Nodejs Node — versions 4.0, 5.0, 6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-23165?
- CVE-2025-23165 is a low-severity vulnerability in Nodejs Node, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 3.7/10. Published 2025-05-19.
- How severe is CVE-2025-23165?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2025-23165 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.