CVE-2020-21687: Nasm Netwide Assembler

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Buffer Overflow vulnerability in scan function in stdscan.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.

Affected products

• Nasm Netwide Assembler: version 2.15 only

Published 2023-08-22. Last modified 2026-06-17.