CVE-2021-43814

Name: CVE-2021-43814
Creator: NVD / NIST
Published: 2021-12-13T20:15:07.64+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-43814 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Rizin is a UNIX-like reverse engineering framework and command-line toolset. In versions up to and including 0.3.1 there is a heap-based out of bounds write in parse_die() when reversing an AMD64 ELF binary with DWARF debug info. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

Rizin is a UNIX-like reverse engineering framework and command-line toolset. In versions up to and including 0.3.1 there is a heap-based out of bounds write in parse_die() when reversing an AMD64 ELF binary with DWARF debug info. When a malicious AMD64 ELF binary is opened by a victim user, Rizin may crash or execute unintended actions. No workaround are known and users are advised to upgrade.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.85%

53.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Rizin	Rizin	<= 0.3.1

References

https://github.com/rizinorg/rizin/commit/aa6917772d2f32e5a7daab25a46c72df0b5ea406Patch, Third Party Advisory
https://github.com/rizinorg/rizin/issues/2083Third Party Advisory
https://github.com/rizinorg/rizin/security/advisories/GHSA-hqqp-vjcm-mw8rThird Party Advisory
https://github.com/rizinorg/rizin/commit/aa6917772d2f32e5a7daab25a46c72df0b5ea406Patch, Third Party Advisory
https://github.com/rizinorg/rizin/issues/2083Third Party Advisory
https://github.com/rizinorg/rizin/security/advisories/GHSA-hqqp-vjcm-mw8rThird Party Advisory

Timeline

Published: Dec 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43814?

How severe is CVE-2021-43814?

CVE-2021-43814 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43814?

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-2021-43814?

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

Scan your code now

Source: NVD / NIST