CVE-2018-12115

In all versions of Node.js prior to 6.14.4, 8.11.4 and 10.9.0 when used with UCS-2 encoding (recognized by Node.js under the names `'ucs2'`, `'ucs-2'`, `'utf16le'` and `'utf-16le'`), `Buffer#write()` can be abused to write outside of the bounds of a single `Buffer`. Writes that start from the second-to-last position of a buffer cause a miscalculation of the maximum length of the input bytes to be written.

CVSS 3.0

7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

7.9% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2018-08-21

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• nodejs:node.js
• redhat:openshift_container_platform

References

• http://www.securityfocus.com/bid/105127
• https://access.redhat.com/errata/RHSA-2018:2552
• https://access.redhat.com/errata/RHSA-2018:2553
• https://access.redhat.com/errata/RHSA-2018:2944
• https://access.redhat.com/errata/RHSA-2018:2949

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