# CVE-2024-42004: Privilege escalation in Teams (work or school)

> Attackers can inject malicious libraries into Microsoft Teams on macOS to bypass permissions and execute code with elevated privileges.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Dec 2024
- **Updated:** 19 Dec 2024
- **Also known as:** GHSA-45pj-qv6g-f89w

## What is CVE-2024-42004?

CVE-2024-42004 is a high-severity vulnerability in Microsoft Teams (work or school), published on 18 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A library injection vulnerability exists in Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject a library and start the program to trigger this vulnerability and then make use of the vulnerable application's permissions.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2024-42004?

It affects 1 product.


Products: Microsoft Teams.

## How do I fix CVE-2024-42004?

No fix has been published for CVE-2024-42004 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42004 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42004 exists.

## Other vulnerabilities in Microsoft Teams (work or school)

- [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-2024-42004 and fix it if it is affected.

What it is: CVE-2024-42004 is a high-severity vulnerability in Microsoft Teams (work or school), published on 18 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42004 exists.

Affected product: Microsoft Teams (work or school). 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-2024-42004/ (Markdown: https://insights.sbomify.com/CVE-2024-42004/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42004
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42004
- OSV: https://osv.dev/vulnerability/CVE-2024-42004

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42004/
Summaries are generated and may contain mistakes; the official description above is the record.