CVE-2024-21378
Microsoft Outlook Remote Code Execution Vulnerability
Microsoft Outlook Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Outlook Remote Code Execution Vulnerability
Microsoft Outlook Remote Code Execution Vulnerability
- Record
CVE-2024-21378- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-94
- Updated
- 2026-11-02
EUVDEUVD-2024-19090
Microsoft Outlook Remote Code Execution Vulnerability
- Record
EUVD-2024-19090- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qm4q-xhjm-67jr
Microsoft Outlook Remote Code Execution Vulnerability
Microsoft Outlook Remote Code Execution Vulnerability
- Record
GHSA-qm4q-xhjm-67jr- CVSS 3.1
- 8.0 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
NVD
Microsoft Outlook Remote Code Execution Vulnerability
- Record
CVE-2024-21378- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | d0rb/CVE-2024-21378 | 2024-03-12 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-21378 is a high vulnerability (CVSS 8.8) in Microsoft Outlook, published February 13, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.0%, the 95th percentile. No source names a fixed version.