What is CVE-2022-0570?

CVE-2022-0570 is a critical-severity vulnerability in Mruby, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2022-02-14.

How severe is CVE-2022-0570?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Mruby

CVE-2022-0570

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Vulnerability class: Buffer Overflow

Published 2022-02-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Mruby
Mruby Mruby/mruby — versions unspecified

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

huntr.dev/bounties/65a7632e-f95b-4836-b1a7-9cb95e5124f1 (Exploit, Third Party Advisory)
github.com/mruby/mruby/commit/38b164ace7d6ae1c367883a3d67d7f559783faad (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0570?: CVE-2022-0570 is a critical-severity vulnerability in Mruby, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2022-02-14.
How severe is CVE-2022-0570?: Critical severity. CVSS v3 base score is 9.8 out of 10.