CVE-2021-4021

7.5 highEPSS 1.1%

High (7.5) in radare radare2. EPSS 1.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWEs: CWE-834, CWE-400
Published: 2022-02-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

radare:radare2

References

https://github.com/radareorg/radare2/issues/19436
https://github.com/radareorg/radare2/issues/19436

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