CVE-2021-46023

Name: CVE-2021-46023
Creator: NVD / NIST
Published: 2023-02-14T16:15:11.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-46023 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An Untrusted Pointer Dereference was discovered in function mrb_vm_exec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

An Untrusted Pointer Dereference was discovered in function mrb_vm_exec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.78%

51.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mruby	Mruby	< 3.1.0

References

https://github.com/mruby/mruby/issues/5613Exploit, Issue Tracking, Third Party Advisory
https://github.com/mruby/mruby/issues/5613Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Feb 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46023?

An Untrusted Pointer Dereference was discovered in function mrb_vm_exec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.

How severe is CVE-2021-46023?

CVE-2021-46023 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46023?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46023?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST