A heap buffer overflow vulnerability exists in the Netwide Assembler (NASM) due to a lack of bounds checking in the obj_directive() function. This vulnerability can be exploited by a user assembling a malicious .asm file, potentially leading to heap memory corruption, denial of service (crash), and arbitrary code execution.
History

Thu, 16 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Nasm netwide Assembler
Weaknesses CWE-787
CPEs cpe:2.3:a:nasm:netwide_assembler:3.02:rc5:*:*:*:*:*:*
Vendors & Products Nasm netwide Assembler

Tue, 14 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122

Tue, 14 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120
References
Metrics threat_severity

None

threat_severity

Important


Mon, 13 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122

Fri, 10 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Nasm
Nasm nasm
Vendors & Products Nasm
Nasm nasm

Fri, 10 Apr 2026 13:45:00 +0000

Type Values Removed Values Added
Description A heap buffer overflow vulnerability exists in the Netwide Assembler (NASM) due to a lack of bounds checking in the obj_directive() function. This vulnerability can be exploited by a user assembling a malicious .asm file, potentially leading to heap memory corruption, denial of service (crash), and arbitrary code execution.
Title CVE-2026-6067
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-04-10T13:30:26.140Z

Updated: 2026-04-10T14:58:07.818Z

Reserved: 2026-04-10T13:26:16.675Z

Link: CVE-2026-6067

cve-icon Vulnrichment

Updated: 2026-04-10T14:57:45.406Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-10T14:16:38.620

Modified: 2026-04-16T19:49:06.873

Link: CVE-2026-6067

cve-icon Redhat

Severity : Important

Publid Date: 2026-04-10T13:30:26Z

Links: CVE-2026-6067 - Bugzilla