What is CVE-2020-21686?

CVE-2020-21686 is a medium-severity vulnerability in Nasm Netwide_assembler, classified under CWE-562. CVSS score: 5.5/10. Published 2023-08-22.

How severe is CVE-2020-21686?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2020-21686 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Nasm Netwide_assembler

CVE-2020-21686

A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.

EPSS: 0.004 (30.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Nasm Netwide_assembler
N/a — versions n/a

Weakness classification (CWE)

CWE-562

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-21686?: CVE-2020-21686 is a medium-severity vulnerability in Nasm Netwide_assembler, classified under CWE-562. CVSS score: 5.5/10. Published 2023-08-22.
How severe is CVE-2020-21686?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-21686 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.