CVE-2020-18780: Nasm Netwide Assembler

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A Use After Free vulnerability in function new_Token in asm/preproc.c in nasm 2.14.02 allows attackers to cause a denial of service via crafted nasm command.

Affected products

• Nasm Netwide Assembler: version 2.14.02 only

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