CVE-2020-24978
CVSS v3
9.8
CRITICAL
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In NASM 2.15.04rc3, there is a double-free vulnerability in pp_tokline asm/preproc.c. This is fixed in commit 8806c3ca007b84accac21dd88b900fb03614ceb7.
Technical details
- Published
- 2020-09-04
Frequently asked questions
What is 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.
Is CVE-2020-24978 actively exploited?
Active exploitation of CVE-2020-24978 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-24978?
CVE-2020-24978 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-24978 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2020 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).