DEBIAN-CVE-2025-55131
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.
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | nodejs | 0, 20.19.2+dfsg-1 |
| Debian:14 | nodejs | 20.19.4+dfsg-1, 20.19.5+dfsg+~cs20.19.12-1, 20.19.5+dfsg+~cs20.19.12-2 |
| Debian:12 | nodejs | 0, 18.13.0+dfsg1-1, 18.13.0+dfsg1-1.1 |
Timeline
- Jan 20, 2026 CVE Published
- Sep 1, 2026 CVE Updated