Is CVE-2021-4021 actively exploited?

CVE-2021-4021 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-4021?

CVE-2021-4021 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2021-4021?

Patch guidance is available from radare security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-4021.

Fix CVE-2021-4021 - HIGH radare radare2

Description

A vulnerability was found in Radare2 in versions prior to 5.6.2, 5.6.0, 5.5.4 and 5.5.2. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-400 CWE-834

Metadata

Primary Vendor: RADARE
Published: 2/24/2022
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-4021

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary