What is CVE-2020-24344?

CVE-2020-24344 is a high-severity vulnerability in Jerryscript, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2020-08-13.

How severe is CVE-2020-24344?

High severity. CVSS v3 base score is 7.1 out of 10.

Out-of-bounds Read in Jerryscript

CVE-2020-24344

JerryScript through 2.3.0 has a (function({a=arguments}){const arguments}) buffer over-read.

Vulnerability class: Buffer Overflow

Published 2020-08-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.6th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Jerryscript

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/jerryscript-project/jerryscript/issues/3976 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-24344?: CVE-2020-24344 is a high-severity vulnerability in Jerryscript, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2020-08-13.
How severe is CVE-2020-24344?: High severity. CVSS v3 base score is 7.1 out of 10.