🛡️ CVE-2022-1427 — mruby

🟠 CVSS 7.8 — High ⚠️ Exploit Public CWE-125 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Out-of-bounds Read in mrb_obj_is_kind_of in in GitHub repository mruby/mruby prior to 3.2. # Impact: Possible arbitrary code execution if being exploited.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level 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 high, availability high.

Weakness class

CVE-2022-1427 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 and timeline

Affected software: mruby (fixed in 3.2). Published on 23 April 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-2022-1427 on other distributions

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

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-125
Public Exploit ⚠️ Yes
Source NVD
Published 2022-04-23
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
mruby — 3.2

Similar Threats

Exploit Protection

Are you running mruby?

CVE-2022-1427 carries CVSS 7.8 High 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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More CVE 2022 advisories

Part of CVE 2022 in the advisory index.