What is CVE-2022-4996?

CVE-2022-4996 is a medium-severity vulnerability in Mruby, classified under CWE-1077. CVSS score: 5.3/10. Published 2026-08-20.

How severe is CVE-2022-4996?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Mruby

CVE-2022-4996

A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to apply a patch to resolve this issue.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

N/a Mruby — versions 3.1.0

Weakness classification (CWE)

CWE-1077

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2022-4996?: CVE-2022-4996 is a medium-severity vulnerability in Mruby, classified under CWE-1077. CVSS score: 5.3/10. Published 2026-08-20.
How severe is CVE-2022-4996?: Medium severity. CVSS v3 base score is 5.3 out of 10.