# CVE-2017-11874: Security feature bypass in Microsoft Edge

> Attackers can bypass Control Flow Guard in Microsoft Edge to execute arbitrary code via JIT compiler memory handling flaws.

- **Severity:** Low 3.1 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Nov 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-mpq3-wcg8-72j4

## What is CVE-2017-11874?

CVE-2017-11874 is a low-severity vulnerability in Microsoft Chakracore, published on 15 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Microsoft Edge in Microsoft Windows 10 1703, 1709, Windows Server, version 1709, and ChakraCore allows an attacker to bypass Control Flow Guard (CFG) to run arbitrary code on a target system, due to how Microsoft Edge handles accessing memory in code compiled by the Edge Just-In-Time (JIT) compiler, aka "Microsoft Edge Security Feature Bypass Vulnerability". This CVE ID is unique from CVE-2017-11863 and CVE-2017-11872.

## Which versions are affected by CVE-2017-11874?

It affects 2 products.


Products: Microsoft Chakracore, Microsoft Edge.

## How do I fix CVE-2017-11874?

No fix has been published for CVE-2017-11874 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-11874 being exploited?

There is no known exploitation of CVE-2017-11874 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Chakracore

- [CVE-2018-8298](https://insights.sbomify.com/CVE-2018-8298/): ChakraCore Scripting Engine Type Confusion (high 7.5, exploited in the wild)
- [CVE-2020-0878](https://insights.sbomify.com/CVE-2020-0878/): Microsoft Edge and Internet Explorer Memory Corruption (medium 4.2, exploited in the wild)
- [CVE-2018-8500](https://insights.sbomify.com/CVE-2018-8500/): ChakraCore RCE Vulnerability (critical 9.8)
- [CVE-2017-11767](https://insights.sbomify.com/CVE-2017-11767/): ChakraCore vulnerable to privilege escalation (critical 9.8)
- [CVE-2017-8658](https://insights.sbomify.com/CVE-2017-8658/): ChakraCore RCE Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11874 and fix it if it is affected.

What it is: CVE-2017-11874 is a low-severity vulnerability in Microsoft Chakracore, published on 15 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-11874 in the wild and no public exploit code.

Affected product: Microsoft Chakracore. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-11874/ (Markdown: https://insights.sbomify.com/CVE-2017-11874/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11874
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11874
- OSV: https://osv.dev/vulnerability/CVE-2017-11874

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-11874/
Summaries are generated and may contain mistakes; the official description above is the record.