What is CVE-2026-6068?

CVE-2026-6068 is a critical-severity vulnerability in Nasm, classified under Use After Free. CVSS score: 9.6/10. Published 2026-04-10.

How severe is CVE-2026-6068?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Use After Free in Nasm

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…

Vulnerability class: Use-After-Free

EPSS: 0.000 (8.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Nasm — versions nasm-3.02rc5
Nasm Netwide_assembler — versions 3.02

Weakness classification (CWE)

CWE-416 — Use After Free

References

cret@cert.org (Exploit, Issue Tracking)
cret@cert.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-6068?: CVE-2026-6068 is a critical-severity vulnerability in Nasm, classified under Use After Free. CVSS score: 9.6/10. Published 2026-04-10.
How severe is CVE-2026-6068?: Critical severity. CVSS v3 base score is 9.6 out of 10.