Netwide Assembler (NASM) 2.14rc16 has a heap-based buffer over-read in expand_mmac_params in asm/preproc.c for the special cases of the % and $ and ! characters.
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392525
Source: Mitre, NVD
Published: 2018-11-12
Updated: 2024-11-21
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00223