What is CVE-2020-23257?

CVE-2020-23257 is a high-severity vulnerability in Espruino, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2023-04-04.

How severe is CVE-2020-23257?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Espruino

CVE-2020-23257

Buffer Overflow vulnerability found in Espruino 2v05.41 allows an attacker to cause a denial of service via the function jsvGarbageCollectMarkUsed in file src/jsvar.c.

Vulnerability class: Buffer Overflow

EPSS: 0.009 (55.1th 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

Espruino — versions 2.05.41
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2020-23257?: CVE-2020-23257 is a high-severity vulnerability in Espruino, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2023-04-04.
How severe is CVE-2020-23257?: High severity. CVSS v3 base score is 7.5 out of 10.