Use After Free in Jerryscript

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.

Vulnerability class: Use-After-Free

EPSS: 0.012 (63.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Jerryscript — versions 2.3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-46170?: CVE-2021-46170 is a high-severity vulnerability in Jerryscript, classified under Use After Free. CVSS score: 7.5/10. Published 2022-01-14.
How severe is CVE-2021-46170?: High severity. CVSS v3 base score is 7.5 out of 10.