# CVE-2019-5922: Privilege escalation in The installer of Microsoft Teams

> An attacker can gain privileges via a Trojan horse DLL in the Microsoft Teams installer due to an untrusted search path vulnerability.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Mar 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-4xfv-h3v4-ch7r

## What is CVE-2019-5922?

CVE-2019-5922 is a high-severity vulnerability in The installer of Microsoft Teams, published on 12 Mar 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Untrusted search path vulnerability in The installer of Microsoft Teams allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Weakness: CWE-426 (Untrusted Search Path)

## Which versions are affected by CVE-2019-5922?

It affects 1 product.


Products: Microsoft Teams.

## How do I fix CVE-2019-5922?

No fix has been published for CVE-2019-5922 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5922 being exploited?

There is no known exploitation of CVE-2019-5922 in the wild and no public exploit code.

## Other vulnerabilities in The installer of Microsoft Teams

- [CVE-2026-65667](https://insights.sbomify.com/CVE-2026-65667/): Microsoft Teams Elevation of Privilege Vulnerability (critical 10.0)
- [CVE-2026-62896](https://insights.sbomify.com/CVE-2026-62896/): Microsoft Teams Elevation of Privilege Vulnerability (critical 9.6)
- [CVE-2026-33823](https://insights.sbomify.com/CVE-2026-33823/): Microsoft Team Events Portal Information Disclosure Vulnerability (critical 9.6)
- [CVE-2026-65767](https://insights.sbomify.com/CVE-2026-65767/): Microsoft Teams for Android Spoofing Vulnerability (high 8.8)
- [CVE-2026-65768](https://insights.sbomify.com/CVE-2026-65768/): Microsoft Teams Remote Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5922 and fix it if it is affected.

What it is: CVE-2019-5922 is a high-severity vulnerability in The installer of Microsoft Teams, published on 12 Mar 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-5922 in the wild and no public exploit code.

Affected product: The installer of Microsoft Teams. 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-2019-5922/ (Markdown: https://insights.sbomify.com/CVE-2019-5922/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5922
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5922
- OSV: https://osv.dev/vulnerability/CVE-2019-5922

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-5922/
Summaries are generated and may contain mistakes; the official description above is the record.