Resource exhaustion in Node.js Node
CVE-2025-59464
A memory leak in Node.js’s OpenSSL integration occurs when converting `X.509` certificate fields to UTF-8 without freeing the allocated buffer. When applications call `socket.getPeerCertificate(true)`, each certificate field leaks memory, allowing remote clients to trigger steady memory growth through repeated TLS connections. Over time this can lead to resource exhaustion and denial of service.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (16.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Node.js Node — versions 24.12.0
- Node.js
Weakness classification (CWE)
References
- nodejs.org/en/blog/vulnerability/december-2025-security-releases (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-59464?
- CVE-2025-59464 is a high-severity vulnerability in Node.js Node, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-01-20.
- How severe is CVE-2025-59464?
- High severity. CVSS v3 base score is 7.5 out of 10.