# CVE-2019-1193: Microsoft Browser Memory Corruption Vulnerability

> Remote attackers can execute arbitrary code via crafted websites in Microsoft browsers, potentially gaining full system control if the user has administrative rights.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Aug 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-4mxp-65j2-fm9w

## What is CVE-2019-1193?

CVE-2019-1193 is a medium-severity memory corruption vulnerability in Microsoft Edge, published on 14 Aug 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.
The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2019-1193?

It affects 2 products.


Products: Microsoft Edge, Microsoft Internet Explorer.

## How do I fix CVE-2019-1193?

No fix has been published for CVE-2019-1193 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1193 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-1193 exists.

## Other vulnerabilities in Microsoft Edge

- [CVE-2021-26411](https://insights.sbomify.com/CVE-2021-26411/): Microsoft Internet Explorer Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2016-7200](https://insights.sbomify.com/CVE-2016-7200/): Microsoft Edge Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2016-7201](https://insights.sbomify.com/CVE-2016-7201/): Microsoft Edge Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2017-0037](https://insights.sbomify.com/CVE-2017-0037/): Microsoft Edge and Internet Explorer Type Confusion (high 8.1, exploited in the wild)
- [CVE-2016-3351](https://insights.sbomify.com/CVE-2016-3351/): Microsoft Internet Explorer and Edge Information Disclosure (medium 6.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1193 and fix it if it is affected.

What it is: CVE-2019-1193 is a medium-severity memory corruption vulnerability in Microsoft Edge, published on 14 Aug 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-1193 exists.

Affected product: Microsoft Edge. 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-2019-1193/ (Markdown: https://insights.sbomify.com/CVE-2019-1193/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1193
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1193
- OSV: https://osv.dev/vulnerability/CVE-2019-1193

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-1193/
Summaries are generated and may contain mistakes; the official description above is the record.