CVE-2020-24342: Lua through 5.4.0 allows a stack redzone cross in luaO_pushvfstring because a protection mechanism wrongly...

Security readout for executives and security teams

CVE-2020-24342 is a Lua runtime flaw affecting Lua through 5.4.0. The public record describes a stack redzone boundary problem in formatted string handling. Business urgency depends on where Lua is embedded and whether untrusted users can influence Lua execution or inputs. Exposure is likely in systems running Lua through 5.4.0, including applications or appliances embedding Lua. The provided affected-product data is incomplete, so teams should inventory direct Lua packages and embedded runtimes rather than relying only on package scanners. Handle as a targeted inventory and patch-management item. Escalate priority where Lua is exposed through user-controlled scripts, plugins, or network-facing services. Current evidence does not justify claiming active exploitation from the provided sources. Mitigation focus: Inventory Lua runtimes and embedded Lua components across servers, applications, and appliances.; Check vendor or distribution guidance for fixed Lua packages or rebuilt embedded runtimes.; Update Lua packages where vendor advisories provide a fixed release..

Prepared

Jun 3, 2026, 10:59 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.