Name: CVE-2018-20538: Use After Free
Creator: Rapid7
Published: 2018-12-28T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2018-20538, CWE-416, CVSS 5.5, EPSS 0.00138

There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service during certain finishes tests.

CVSS Details

CVSS 3.1 Base Score: 5.5
CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	No solution exists	May 15, 2025	Dec 28, 2018
Redhat_linux	—	No solution exists	Jul 9, 2025	Dec 28, 2018
Ubuntu	—	No solution exists	Jun 26, 2025	Dec 28, 2018

Prioritize with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence