CVE-2020-17085
Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server Denial of Service Vulnerability
- Record
CVE-2020-17085- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2020-9040
Microsoft Exchange Server Denial of Service Vulnerability
- Record
EUVD-2020-9040- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mj56-6jxg-8vw7
Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server Denial of Service Vulnerability
- Record
GHSA-mj56-6jxg-8vw7- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Microsoft Exchange Server Denial of Service Vulnerability
- Record
CVE-2020-17085- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L - CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-17085 is a medium vulnerability (CVSS 6.2) in Microsoft Exchange Server, published November 11, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.63%, the 89th percentile. No source names a fixed version.