CVE-2026-6067

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/netwide-assembler/nasm/issues/203	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:nasm:netwide_assembler:3.02:rc5:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-10 14:16

Updated : 2026-06-17 11:00

NVD link : CVE-2026-6067

Mitre link : CVE-2026-6067

CVE.ORG link : CVE-2026-6067

JSON object : View

Products Affected

nasm

netwide_assembler

CWE

CWE-787

Out-of-bounds Write

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