--- cve: "CVE-2025-55131" severity: "HIGH" cvss: 7.1 epss: "3.4%" vendor: "nodejs" kev: false exploited: false published: "2026-01-20 21:16:03" tags: [cve, security, high] source: tsecurity.de CVE-Dossier exported: "2026-09-19T04:52:15+02:00" --- # CVE-2025-55131 > 7.1 HIGH ## Beschreibung A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact. ## CVSS-Vektor ``` CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L ``` | Metrik | Wert | Bewertung | |---|---|---| | AV Angriffsvektor | Netzwerk | bad | | AC Komplexität | Hoch | good | | PR Privilegien | Gering | warn | | UI Interaktion | Keine | bad | | S Scope | Unverändert | good | | C Vertraulichkeit | Hoch | bad | | I Integrität | Hoch | bad | | A Verfügbarkeit | Gering | warn | ## Referenzen - - - - - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-55131) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_