CVE-2020-15945: n/a vulnerability

CVE-2020-15945: Lua 5.4.0 (fixed in 5.4.1) has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_t...

Lua 5.4.0 (fixed in 5.4.1) has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.

UnknownCVSS not scoredNot KEV-listedUpdatedFeb 19, 2025, 14:35 UTC (UTC+00:00)

Security readout for executives and security teams

Lua 5.4.0 contains a bug that can crash the interpreter. The public record says it was fixed in Lua 5.4.1. Business impact depends on whether your software embeds Lua 5.4.0 and allows user-controlled or externally supplied Lua scripts to run. Exposure is likely limited to systems that directly use or embed Lua 5.4.0. Risk increases where Lua execution is reachable by untrusted users, plugins, automation, or tenant-controlled scripts. Treat this as a targeted upgrade and inventory item, not an emergency based on current evidence. Prioritize environments where Lua 5.4.0 processes untrusted scripts or supports customer-controlled plugin behavior. Mitigation focus: Upgrade Lua 5.4.0 deployments to Lua 5.4.1 or later.; Check application vendors for bundled Lua runtime updates.; Identify products that embed Lua rather than relying on system packages..

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.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 24, 2020, 20:05 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3CVE reference
https://www.lua.org/bugs.html#5.4.0-8CVE reference

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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