CVE-2019-20334

5.5 mediumEPSS 0.8%

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.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWE: CWE-674
Published: 2020-01-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nasm:netwide_assembler

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

Check your stack JSON