CVE-2022-28805
CVSS v3
9.1
CRITICAL
EPSS Score
3.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
Technical details
- Published
- 2022-04-08
Frequently asked questions
What is CVE-2022-28805?
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
Is CVE-2022-28805 actively exploited?
Active exploitation of CVE-2022-28805 has not been confirmed. Its EPSS score was 3.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-28805?
CVE-2022-28805 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2022-28805 affecting your environment?
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