CVE-2026-6068

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.

Score

CVSS 3.1 9.6 Critical

Status

Analyzed - cret@cert.org

Published

2026-04-10

Last modified

2026-05-20

Weaknesses

CWE-416

Affected products

• Nasm (Nasm)
• Netwide Assembler (Nasm)

References

• https://github.com/netwide-assembler/nasm/issues/222
• https://sekai.team/blog/nasm-cve-disclosure/cve-2026-6068