CVE-2021-46170

Name: CVE-2021-46170
Creator: NVD / NIST
Published: 2022-01-14T21:15:08.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2021-46170 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in JerryScript commit a6ab5e9. There is an Use-After-Free in lexer_compare_identifier_to_string in js-lexer.c file.. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

Description

An issue was discovered in JerryScript commit a6ab5e9. There is an Use-After-Free in lexer_compare_identifier_to_string in js-lexer.c file.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.16%

63.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Jerryscript	Jerryscript	2.3.0

References

https://github.com/jerryscript-project/jerryscript/issues/4917Exploit, Issue Tracking, Third Party Advisory
https://github.com/jerryscript-project/jerryscript/issues/4917Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46170?

An issue was discovered in JerryScript commit a6ab5e9. There is an Use-After-Free in lexer_compare_identifier_to_string in js-lexer.c file.

How severe is CVE-2021-46170?

CVE-2021-46170 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46170?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46170?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST