CVE-2021-28452
Microsoft Outlook Memory Corruption Vulnerability
7.1 High
Microsoft Outlook Memory Corruption Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
1.38%Up 1.0 points since Apr 14, 2021
What each source reports
CVE List Score used
Microsoft Outlook Memory Corruption Vulnerability
Microsoft Outlook Memory Corruption Vulnerability
- Record
CVE-2021-28452- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-15131
Microsoft Outlook Memory Corruption Vulnerability
- Record
EUVD-2021-15131- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8499-m9hr-266h
Microsoft Outlook Memory Corruption Vulnerability
Microsoft Outlook Memory Corruption Vulnerability
- Record
GHSA-8499-m9hr-266h- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-787
- Updated
- 2026-11-02
NVD
Microsoft Outlook Memory Corruption Vulnerability
- Record
CVE-2021-28452- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-28452 is a high vulnerability (CVSS 7.1) in Microsoft Outlook, published April 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.38%, the 72nd percentile. No source names a fixed version.