---
cve: "CVE-2025-59464"
severity: "MEDIUM"
cvss: 6.5
epss: "24%"
vendor: "nodejs"
kev: false
exploited: false
published: "2026-01-20 21:16:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T15:46:42+02:00"
---

# CVE-2025-59464

> 6.5 MEDIUM

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 70f6b58ac655234435a99d72b857dd7b316d34bf (Commit)

## Referenzen

- <https://nodejs.org/en/blog/vulnerability/december-2025-security-releases>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-59464) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_