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Vulnerability record · CVE-2020-24369 · published 17 August 2020

CVE-2020-24369: Lua null pointer dereference vulnerability

Lua · Lua

ldebug.c in Lua 5.4.0 attempts to access debug information via the line hook of a stripped function, leading to a NULL pointer dereference.

7.5 CVSS 3.1 High EPSS 1.7% · top 23.9% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 5.0
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ldebug.c in Lua 5.4.0 attempts to access debug information via the line hook of a stripped function, leading to a NULL pointer dereference.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/lua/lua/commit/ae5b5ba529753c7a653901ffc29b5ea24c3fdf3a PatchThird Party Advisory
https://www.lua.org/bugs.html#5.4.0-12 ExploitVendor Advisory
https://github.com/lua/lua/commit/ae5b5ba529753c7a653901ffc29b5ea24c3fdf3a PatchThird Party Advisory
https://www.lua.org/bugs.html#5.4.0-12 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-24369), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.