# CVE-2021-34410: Privilege escalation in Zoom Plugin for Microsoft Outlook for Mac

> A user-writable application bundle allows local attackers to escalate privileges to root during installation of the Zoom Plugin for Microsoft Outlook on Mac.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 27 Sep 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pc44-f378-g8j5

## What is CVE-2021-34410?

CVE-2021-34410 is a high-severity vulnerability in Zoom Plugin for Microsoft Outlook for Mac, published on 27 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A user-writable application bundle unpacked during the install for all versions of the Zoom Plugin for Microsoft Outlook for Mac before 5.0.25611.0521 allows for privilege escalation to root.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2021-34410?

It affects 1 product.


Products: Zoom Zoom Plugin for Microsoft Outlook.

## How do I fix CVE-2021-34410?

No fix has been published for CVE-2021-34410 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34410 being exploited?

There is no known exploitation of CVE-2021-34410 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Plugin for Microsoft Outlook for Mac

- [CVE-2021-34413](https://insights.sbomify.com/CVE-2021-34413/): Race condition in Zoom Plugin for Microsoft Outlook for MacOS (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34410 and fix it if it is affected.

What it is: CVE-2021-34410 is a high-severity vulnerability in Zoom Plugin for Microsoft Outlook for Mac, published on 27 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-34410 in the wild and no public exploit code.

Affected product: Zoom Plugin for Microsoft Outlook for Mac. 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-2021-34410/ (Markdown: https://insights.sbomify.com/CVE-2021-34410/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34410
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34410
- OSV: https://osv.dev/vulnerability/CVE-2021-34410

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34410/
Summaries are generated and may contain mistakes; the official description above is the record.