High severity · published Feb 11, 2020
CVE-2020-0688
Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability
RansomwareIn wildKEV
8.8
CVSS
100%
EPSS
Yes
On KEV
Description
A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)100.0% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueMay 3, 2022
Ransomware campaign useKnown
Affected products
Which versions
ES
Exchange Server · Microsoft
2010; 2013; 2016; 2016; 2019; 2019 · source: NVD, KEV
ME
Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30 · Microsoft
All versions, or not specified · source: vendor
ME
Microsoft Exchange Server 2013 · Microsoft
Cumulative Update 23 · source: vendor
ME
Microsoft Exchange Server 2016 Cumulative Update 14 · Microsoft
All versions, or not specified · source: vendor
ME
Microsoft Exchange Server 2016 Cumulative Update 15 · Microsoft
All versions, or not specified · source: vendor
ME
Microsoft Exchange Server 2019 Cumulative Update 3 · Microsoft
All versions, or not specified · source: vendor
ME
Microsoft Exchange Server 2019 Cumulative Update 4 · Microsoft
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-0688
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-0688
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688
x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-20-258/
x_refsource_MISC
http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html
x_refsource_MISC
http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html
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