CVE-2020-15889
CVSS v3
9.8
CRITICAL
EPSS Score
2.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.
Technical details
- Published
- 2020-07-21
Frequently asked questions
What is CVE-2020-15889?
Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.
Is CVE-2020-15889 actively exploited?
Active exploitation of CVE-2020-15889 has not been confirmed. Its EPSS score was 2.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-15889?
CVE-2020-15889 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-15889 affecting your environment?
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