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Vulnerabilities CVE-2025-55131

CVE-2025-55131

High
Open
TLP:CLEAR

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Description

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.

Details

CVSS Score
7.1
EPSS Score
3.26%

87.3th percentile

CVSS Vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Confidence
90%
Published
Jan 20, 2026
Last Modified
Jul 15, 2026
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