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Review reviewHigh

CVE-2025-55131

nodejs node, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support

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...

CVSS
7.1
EPSS
3.26%
87.1% percentile
CISA KEV
Not listed
Published
2026.01.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability3.26%
Technical severityCVSS 7.1

Vulnerability overview

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...

Affected product and versions

Product
nodejs node, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support
Affected versions
>= 20.19.6 <= 20.19.6, >= 22.21.1 <= 22.21.1, >= 24.12.0 <= 24.12.0, >= 25.2.1 <= 25.2.1, >= 4.0 < 4.*, >= 5.0 < 5.*, >= 6.0 < 6.*, >= 7.0 < 7.*, >= 8.0 < 8.*, >= 9.0 < 9.*, >= 10.0 < 10.*, >= 11.0 < 11.*, >= 12.0 < 12.*, >= 13.0 < 13.*, >= 14.0 < 14.*, >= 15.0 < 15.*, >= 16.0 < 16.*, >= 17.0 < 17.*, >= 18.0 < 18.*
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that nodejs node, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE
CWE-120, CWE-497
CVE-2025-55131 — nodejs node, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support | SECUFOCUS NOW