What is CVE-2020-24978?

CVE-2020-24978 is a critical-severity vulnerability in Nasm Netwide_assembler, classified under Double Free. CVSS score: 9.8/10. Published 2020-09-04.

How severe is CVE-2020-24978?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-24978 known to be exploited?

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

Double Free in Nasm Netwide_assembler

CVE-2020-24978

In NASM 2.15.04rc3, there is a double-free vulnerability in pp_tokline asm/preproc.c. This is fixed in commit 8806c3ca007b84accac21dd88b900fb03614ceb7.

Vulnerability class: Double Free

EPSS: 0.014 (68.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nasm Netwide_assembler — versions 2.15.04
N/a — versions n/a

Weakness classification (CWE)

CWE-415 — Double Free

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2020-24978?: CVE-2020-24978 is a critical-severity vulnerability in Nasm Netwide_assembler, classified under Double Free. CVSS score: 9.8/10. Published 2020-09-04.
How severe is CVE-2020-24978?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-24978 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.