This vulnerability arises from a flaw in Node.js's buffer allocation logic that can expose uninitialized memory during interrupted allocations when using the vm module with the timeout option. Buffers allocated with Buffer.alloc and other TypedArray instances like Uint8Array may contain leftover data from previous operations. This can lead to leakage of sensitive in-process secrets or data corruption. Exploitation typically requires precise timing or code execution within the process, but remote exploitation is feasible if untrusted input affects workload and timeouts. The vulnerability is tracked as CVE-2025-55131 with a CVSS 3.0 score of 7.1, indicating high severity. Red Hat has released security updates for their Node.js packages to address this issue.

The vulnerability can lead to exposure of uninitialized memory, potentially leaking sensitive information such as tokens or passwords from within the Node.js process. It also risks data corruption. The confidentiality and integrity of applications using the affected Node.js versions can be compromised. Exploitation complexity is high due to the need for precise timing or in-process code execution, but remote exploitation is possible under certain conditions involving untrusted input influencing timeouts.

Red Hat has released security updates that fix this vulnerability in their Node.js packages. Users of affected Red Hat Enterprise Linux versions should apply the relevant updates as described in the Red Hat advisories (e.g., RHSA-2026:2899). Since this is not a cloud service, remediation requires applying these patches. Patch status is confirmed by Red Hat advisories. No indication of 'no action required' or 'already mitigated' was found, so applying the official patches is recommended.