CVE-2025-59464
Last modified
CVE-2025-59464 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 24.0.0, < 24.12.0 |
References
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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