CVE-2026-6068 — CRITICAL (9.6)

Vulnerability Description

NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-file buffer is freed before the pointer is used, allowing for data corruption or remote code execution.

CVSS Score

9.6

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nasm	Netwide Assembler	3.02

Related Weaknesses (CWE)

CWE-416

References

https://github.com/netwide-assembler/nasm/issues/222ExploitIssue Tracking
https://sekai.team/blog/nasm-cve-disclosure/cve-2026-6068ExploitThird Party Advisory

FAQ

What is CVE-2026-6068?

CVE-2026-6068 is a vulnerability with a CVSS score of 9.6 (CRITICAL). NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-...

How severe is CVE-2026-6068?

CVE-2026-6068 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-6068?

Check the references section above for vendor advisories and patch information. Affected products include: Nasm Netwide Assembler.