What is CVE-2022-0525?

CVE-2022-0525 is a critical-severity vulnerability in Mruby, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2022-02-09.

How severe is CVE-2022-0525?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Out-of-bounds Read in Mruby

CVE-2022-0525

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Vulnerability class: Buffer Overflow

Published 2022-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (65.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.9% 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-125 — Out-of-bounds Read

References

huntr.dev/bounties/e19e109f-acf0-4048-8ee8-1b10a870f1e9 (Exploit, Third Party Advisory)
github.com/mruby/mruby/commit/0849a2885f81cfd82134992c06df3ccd59052ac7 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0525?: CVE-2022-0525 is a critical-severity vulnerability in Mruby, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2022-02-09.
How severe is CVE-2022-0525?: Critical severity. CVSS v3 base score is 9.1 out of 10.