DEBIAN-CVE-2025-55131

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2025-55131
Downstream
DSA-6166-1
Published: 20 Jan 2026, 21:16
Last modified:30 Jun 2026, 23:00

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jan 2026, 21:16
Published
Vulnerability first disclosed
30 Jun 2026, 23:00
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected Systems

  • debian•nodejs

    all | all | all | < 18.20.4+dfsg-1~deb12u2 | < 20.19.2+dfsg-1+deb13u1 | < 22.22.0+dfsg+~cs22.19.6-1

References (1)