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Vulnerability record · CVE-2018-19215 · published 12 November 2018

CVE-2018-19215: Nasm netwide assembler out-of-bounds read vulnerability

Nasm · Netwide Assembler

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.

7.8 CVSS 3.0 High EPSS 1.2% · top 32.0% CWE-125 · Out-of-bounds read
7.8CVSS 3.0 base score, v2 6.8
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392525 ExploitIssue Tracking
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
https://bugzilla.nasm.us/show_bug.cgi?id=3392525 ExploitIssue Tracking
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-19215), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.