MEDIUM

CVE-2020-24370

CVSS v3

5.3

MEDIUM

EPSS Score

3.8 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

luaBitnamifrom 5.2.0 · fixed in 5.2.4
luaAlmaLinux:8all versions · fixed in 5.3.4-12.el8and 2 other packages

Vendor advisories

CVE-2020-24370 Red Hat Product Security93 products fixed
lua: segmentation fault in getlocal and setlocal functions in ldebug.c
RHSA-2021:4510 Red Hat Product Security58 products fixed
Red Hat Security Advisory: lua security update

Full record on NVD

Description

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

Technical details

Published: 2020-08-17

Frequently asked questions

What is CVE-2020-24370?

ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).

Is CVE-2020-24370 actively exploited?

Active exploitation of CVE-2020-24370 has not been confirmed. Its EPSS score was 3.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-24370?

CVE-2020-24370 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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