CVE-2022-4996

MediumCVSS 5.3

Published: 20/08/2026(UTC)Updated: 21/08/2026(UTC)Translated: 20/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.48%

40th percentile - higher than 40% of all known CVEs

Summary

A flaw has been found in mruby 3.1.0. The function udiv in bigint.c is affected. Executing a manipulation can lead to floating point comparison with incorrect operator. The attack can be launched remotely, and the exploit has been published.

Risk Assessment

The vulnerability may lead to incorrect calculations or logical errors in applications using mruby, which could be exploited to compromise data integrity or enable other attacks. Prompt patching is recommended.

Recommendation

Apply the available patch for mruby. If not possible, consider restricting access to functions using bigint.c or monitor for unusual behavior.

Other vulnerabilities in mruby

CVE-2017-9527High
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.

Original NVD description (English source)

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.