CVE-2022-0080 Heap-based Buffer Overflow in mruby/mruby

High 8.2 Published 2 Jan 2022 Updated 22 May 2025

Attackers can exploit a heap-based buffer overflow in mruby to execute arbitrary code or cause denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2022-0080?

CVE-2022-0080 is a high-severity memory corruption vulnerability in mruby/mruby, published on 2 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

mruby is vulnerable to Heap-based Buffer Overflow

Weakness: CWE-122

Which versions are affected by CVE-2022-0080?

It affects 1 product.

Products include Mruby Mruby.

How do I fix CVE-2022-0080?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-0080 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-0080 exists.

Sources

Also known as DEBIAN-CVE-2022-0080, GHSA-8vcc-hrhr-q8hf, UBUNTU-CVE-2022-0080.