🛡️ CVE-2022-0623 — mruby

🔴 CVSS 9.1 — Critical ⚠️ Exploit Public CWE-125 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Weakness class

CVE-2022-0623 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.

Affected software

CVE-2022-0623 is recorded against 1 package.

  • mruby (fixed in 3.2)

Timeline and source

Published on 17 February 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
huntr.dev
github.com
huntr.dev

CVE-2022-0623 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE CWE-125
Public Exploit ⚠️ Yes
Source NVD
Published 2022-02-17
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
mruby — 3.2

Similar Threats

Exploit Protection

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CVE-2022-0623 carries CVSS 9.1 Critical rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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