Is CVE-2021-4022 actively exploited?

CVE-2021-4022 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-4022?

CVE-2021-4022 has a CVSS score of 5.5 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

How do I patch CVE-2021-4022?

Patch guidance is available from rizin security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-4022.

CVE-2021-4022 - remediation guidance & executive summary

Description

A vulnerability was found in rizin. The bug involves an ELF64 binary for the HPPA architecture. When a specially crafted binarygets analysed by rizin, it causes rizin to crash by freeing an uninitialized (and potentially user controlled, depending on the build) memory address.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector: local
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-400 CWE-416 · Use After Free

Metadata

Primary Vendor: RIZIN
Published: 8/25/2022
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

rizin : rizin

Remediation Guidance

Executive Summary

Cite this page

CVE-2021-4022. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2021-4022

View on NIST NVD

CVE-2021-4022 vulnerability