# CVE-2022-4996: CVE-2022-4996

Status: published. Published: 2026-08-20. Updated: 2026-11-10.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CVSS 4.0: 5.5 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cna@vuldb.com

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L; source: NVD: cna@vuldb.com

- CVSS 2.0: 5 (medium); AV:N/AC:L/Au:N/C:N/I:N/A:P; source: NVD: cna@vuldb.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable yes; technical impact partial; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-1077

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://huntr.com/bounties/5a5092df-1699-4497-a8b2-38318bce0c4e (cna@vuldb.com)

- https://vuldb.com/cve/CVE-2022-4996 (cna@vuldb.com)

- https://vuldb.com/submit/877513 (cna@vuldb.com)

- https://vuldb.com/vuln/391391 (cna@vuldb.com)

- https://vuldb.com/vuln/391391/cti (cna@vuldb.com)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4996; retrieved 2026-11-10; source updated 2026-11-10

Revision: 6c0927214add914c4c86df09fd83995f7db638fa4208e217baadfc3e683c6e1a

Canonical: https://y2.dev/cve/CVE-2022-4996

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