What’s Vulnerable › Vulnerabilities

CVE-2019-20334

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2020-01-04 · updated 2026-06-17
• Weakness: CWE-674

Description

In Netwide Assembler (NASM) 2.14.02, stack consumption occurs in expr# functions in asm/eval.c. This potentially affects the relationships among expr0, expr1, expr2, expr3, expr4, expr5, and expr6 (and stdscan in asm/stdscan.c). This is similar to CVE-2019-6290 and CVE-2019-6291.

Affected products

• NASM Netwide Assember: 2.14.02

References

• https://bugzilla.nasm.us/show_bug.cgi?id=3392548#c4
• https://bugzilla.nasm.us/show_bug.cgi?id=3392638
• https://bugzilla.nasm.us/show_bug.cgi?id=3392548#c4
• https://bugzilla.nasm.us/show_bug.cgi?id=3392638

Get alerted when CVE-2019-20334 or the next vulnerability affects your stack