CVE-2024-21402 Microsoft Outlook Elevation of Privilege Vulnerability
High 7.1
Published
Updated
Check this codebase for CVE-2024-21402 and fix it if it is affected.
What it is: CVE-2024-21402 is a high-severity vulnerability in Microsoft 365 Apps, published on 13 Feb 2024. 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-2024-21402 in the wild and no public exploit code.
Affected product: Microsoft 365 Apps. 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-2024-21402/ (Markdown: https://insights.sbomify.com/CVE-2024-21402/index.md)
An attacker can exploit this vulnerability in Microsoft Outlook to elevate privileges on the affected system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-21402?
CVE-2024-21402 is a high-severity vulnerability in Microsoft 365 Apps, published on 13 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Microsoft Outlook Elevation of Privilege Vulnerability
Weakness: CWE-285
Which versions are affected by CVE-2024-21402?
It affects 1 product.
Products include Microsoft 365 Apps.
How do I fix CVE-2024-21402?
No fix has been published for CVE-2024-21402 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-21402 being exploited?
There is no known exploitation of CVE-2024-21402 in the wild and no public exploit code.
Other vulnerabilities in Microsoft 365 Apps
- CVE-2024-21413 Microsoft Outlook Improper Input Validation
- CVE-2023-23397 Microsoft Office Outlook Privilege Escalation
- CVE-2024-38189 Microsoft Project Remote Code Execution Vulnerability
- CVE-2023-35311 Microsoft Outlook Security Feature Bypass
- CVE-2026-21514 Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision
Sources
Also known as GHSA-ghm8-g3hr-5g26.