What is CVE-2020-21685?

CVE-2020-21685 is a medium-severity vulnerability in Nasm Netwide Assembler, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2023-08-22.

How severe is CVE-2020-21685?

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

Is CVE-2020-21685 known to be exploited?

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

Buffer overflow in Nasm Netwide Assembler

CVE-2020-21685

Buffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (30.8th 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 — versions 2.15
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

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

Frequently asked questions

What is CVE-2020-21685?: CVE-2020-21685 is a medium-severity vulnerability in Nasm Netwide Assembler, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2023-08-22.
How severe is CVE-2020-21685?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-21685 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.