# CVE-2023-29328: Microsoft Teams Remote Code Execution Vulnerability

> Attackers can execute arbitrary code on Microsoft Teams clients via a use-after-free vulnerability, requiring immediate patching.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **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:** 8 Aug 2023
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-jp4g-93c7-f645

## What is CVE-2023-29328?

CVE-2023-29328 is a high-severity use after free vulnerability in Microsoft Teams for Android, published on 8 Aug 2023. 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 Teams Remote Code Execution Vulnerability

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2023-29328?

It affects 1 product.


Products: Microsoft Teams.

## How do I fix CVE-2023-29328?

No fix has been published for CVE-2023-29328 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-29328 being exploited?

There is no known exploitation of CVE-2023-29328 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Teams for Android

- [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-2023-29328 and fix it if it is affected.

What it is: CVE-2023-29328 is a high-severity use after free vulnerability in Microsoft Teams for Android, published on 8 Aug 2023. 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-2023-29328 in the wild and no public exploit code.

Affected product: Microsoft Teams for Android. 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-2023-29328/ (Markdown: https://insights.sbomify.com/CVE-2023-29328/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29328
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29328
- OSV: https://osv.dev/vulnerability/CVE-2023-29328

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29328/
Summaries are generated and may contain mistakes; the official description above is the record.