CVE-2021-28482
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server 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 Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
CVE-2021-28482- 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
EUVDEUVD-2021-15160
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
EUVD-2021-15160- 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
- 2026-11-03
GitHub AdvisoriesGHSA-5w74-wv2v-34cm
Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021...
Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-28480, CVE-2021-28481, CVE-2021-28483.
- Record
GHSA-5w74-wv2v-34cm- 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 - Updated
- 2026-11-02
NVD
Microsoft Exchange Server Remote Code Execution Vulnerability
- Record
CVE-2021-28482- 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 - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | KevinWorst/CVE-2021-28482_Exploit | 2021-05-21 |
| PoC in GitHub | Shadow0ps/CVE-2021-28482-Exchange-POC | 2021-05-03 |
| PoC in GitHub | timb-machine-mirrors/testanull-CVE-2021-28482.py | 2022-01-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-28482 is a high vulnerability (CVSS 8.8) in Microsoft Exchange Server, published April 13, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 83.2%, the 99th percentile. No source names a fixed version.