CVE-2020-17085
published 2020-11-11CVE-2020-17085: Microsoft Exchange Server Denial of Service Vulnerability
PriorityP422medium4.9CVSS 3.1
AVNACLPRHUINSUCNINAH
EPSS
3.36%
87.4th percentile
Microsoft Exchange Server Denial of Service Vulnerability
Affected
32 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | microsoft_exchange_server_2013_cumulative_update_23 | >= 15.00.0 < publication | publication |
| microsoft | microsoft_exchange_server_2016_cumulative_update_17 | >= 15.01.0 < publication | publication |
| microsoft | microsoft_exchange_server_2016_cumulative_update_18 | >= 15.01.0 < publication | publication |
| microsoft | microsoft_exchange_server_2019_cumulative_update_6 | >= 15.02.0 < publication | publication |
| microsoft | microsoft_exchange_server_2019_cumulative_update_7 | >= 15.02.0 < publication | publication |
| msrc | microsoft_exchange_server_2010_service_pack_3 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_21 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_22 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_23 | — | — |
| msrc | microsoft_exchange_server_2013_service_pack_1 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_10 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_11 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_12 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_13 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_14 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_15 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_16 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_17 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_18 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_19 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_8 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_9 | — | — |
CVSS provenance
nvdv3.14.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P
vendor_msrc9.1CRITICAL
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Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-26857 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 9.1
CVE-2021-26855 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-27065 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-26858 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Denial of Service Vulnerability
vendor_msrc·2020-11-10·CVSS 6.2
CVE-2020-17085 [MEDIUM] Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server: Microsoft Exchange Server
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Denial of Service
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://www.microsoft.com/download/details.aspx?familyid=8f6aa8a7-c4ff-49cc-b949-beda01d3653a
Reference: https://support.microsoft.com/help/4588741
Reference: https://www.microsoft.com/download/details.aspx?familyid=a8b61f90-8e24-4b5b-9551-195bcaa450e5
Reference: https://www.microsoft.com/download/details.aspx?familyid=59e9fa1a-ce45-46bf-974d-8e8468a4fd60
Reference: https://www.microsoft.com/download/details.aspx?familyid=db0cdd28-
GHSA
GHSA-mj56-6jxg-8vw7: Microsoft Exchange Server Denial of Service Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2020-17085 [MEDIUM] CWE-20 GHSA-mj56-6jxg-8vw7: Microsoft Exchange Server Denial of Service Vulnerability
Microsoft Exchange Server Denial of Service Vulnerability
No detection rules found.
No public exploits indexed.
2020-11-11
Published