CVE-2017-18212: Jerryscript

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

An issue was discovered in JerryScript 1.0. There is a heap-based buffer over-read in the lit_read_code_unit_from_hex function in lit/lit-char-helpers.c via a RegExp("[\x0"); payload.

Affected products

• Jerryscript Jerryscript: version 1.0 only

Published 2018-03-01. Last modified 2026-06-17.