What is CVE-2021-46020?

CVE-2021-46020 is a high-severity vulnerability in Mruby, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-01-14.

How severe is CVE-2021-46020?

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

Buffer overflow in Mruby

CVE-2021-46020

An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (60.4th 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

Mruby — versions 3.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

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

Frequently asked questions

What is CVE-2021-46020?: CVE-2021-46020 is a high-severity vulnerability in Mruby, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-01-14.
How severe is CVE-2021-46020?: High severity. CVSS v3 base score is 7.5 out of 10.