CVE-2020-24369
CVE-2020-24369 is a high-severity vulnerability in Lua with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-476
- Affected product: Lua
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-24369?
- 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.
- How severe is CVE-2020-24369?
- CVE-2020-24369 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-24369 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24369?
- CVE-2020-24369 affects Lua. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-24369?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-24369 published?
- CVE-2020-24369 was published on 2020-08-17 and last updated on 2026-06-17.
References
- https://github.com/lua/lua/commit/ae5b5ba529753c7a653901ffc29b5ea24c3fdf3a
- https://www.lua.org/bugs.html#5.4.0-12
Affected products (1)
- cpe:2.3:a:lua:lua:5.4.0:-:*:*:*:*:*:*
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