Read the docs
TI-2021-19620 Aliases CVE-2021-43814

Heap-based OOB write when parsing dwarf DIE info in Rizin

Priority LOW 36CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.00874 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
rizinorgrizinup to 0.3.1—No fix listedCNA
  • rizin Vendorrizinorg Affected up to 0.3.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rizin:rizin:*:*:*:*:*:*:*:*up to 0.3.1Vulnerablerizinorg
  • cpe:2.3:a:rizin:rizin:*:*:*:*:*:*:*:* Versions up to 0.3.1 Vulnerable ·rizinorg

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43814

References

Patch 1

Advisory 2

  • TI-2021-02614 Memory corruption in rizin CVSS 3.1HIGH 7.8
  • TI-2025-01540 rizinorg rizin utf8.c rz_utf8_encode heap-based overflow CVSS 4.0MEDIUM 4.8
  • TI-2025-01538 rizinorg rizin pdb.c msf_stream_directory_free buffer overflow CVSS 4.0MEDIUM 4.8
  • TI-2024-20906 rizin before v0.6.3 is vulnerable to Improper Neutralization of Special Elements via… CVSS 3.1CRITICAL 9.1
  • TI-2024-20907 rizin before Release v0.6.3 is vulnerable to Uncontrolled Resource Consumption via… CVSS 3.1HIGH 7.5
  • TI-2023-20912 Rizin vulnerable to Integer Overflow in C++ demangler logic CVSS 3.1HIGH 7.8
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences