Use After Free in Jerryscript

CVE-2021-26194

An issue was discovered in JerryScript 2.4.0. There is a heap-use-after-free in ecma_is_lexical_environment in the ecma-helpers.c file.

Vulnerability class: Use-After-Free

EPSS: 0.009 (57.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Jerryscript — versions 2.4.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2021-26194?: CVE-2021-26194 is a medium-severity vulnerability in Jerryscript, classified under Use After Free. CVSS score: 6.5/10. Published 2021-06-10.
How severe is CVE-2021-26194?: Medium severity. CVSS v3 base score is 6.5 out of 10.