What’s Vulnerable › Vulnerabilities

CVE-2018-20538

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-28 · updated 2026-06-17
• Weakness: CWE-416

Description

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.

Affected products

• NASM Netwide Assember: 2.14.0-rc16

References

• https://bugzilla.nasm.us/show_bug.cgi?id=3392531
• https://bugzilla.nasm.us/show_bug.cgi?id=3392531

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