CVE-2021-4021

low
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
2.5

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-4021

OS impact

OSVersionStatusFixed in
arch archfixed5.5.2-1
debian debiansidfixed5.9.0+dfsg-1

References

Verify integrity in audit chain (admin only). AS-IS.