HOME VULNERABILITIESCVE-2020-15888

HIGH

CVE-2020-15888

CWE-125Published: July 21, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Lua through 5.4.0 mishandles the interaction between stack resizes and garbage collection, leading to a heap-based buffer overflow, heap-based buffer over-read, or use-after-free.

Technical Analysis

CVE-2020-15888 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

lua1 product(s)

lua

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7

PATCHhttps://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5

PATCHhttps://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7

PATCHhttps://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00053.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00054.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00071.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00079.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00053.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00054.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00071.html

ADVISORYhttp://lua-users.org/lists/lua-l/2020-07/msg00079.html

All References (12)

→

http://lua-users.org/lists/lua-l/2020-07/msg00053.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00054.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00071.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00079.htmlExploit · Mailing List · Third Party Advisory

→

https://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7Patch · Third Party Advisory

→

https://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5Patch · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00053.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00054.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00071.htmlExploit · Mailing List · Third Party Advisory

→

http://lua-users.org/lists/lua-l/2020-07/msg00079.htmlExploit · Mailing List · Third Party Advisory

→

https://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7Patch · Third Party Advisory

→

https://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-15888

CVSS Score8.8 / 10

SeverityHIGH

WeaknessCWE-125

CISA KEVNo

Affected1 vendor(s)

PublishedJul 21, 2020

Related CVEs (CWE-125)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-15888 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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