CVE-2020-0688
HIGH severity · CVSS 8.8 · Improper authentication · actively exploited (CISA KEV)
8.8CVSS HIGH ● exploited ⚠ ransomware
🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
⚠ Known use in ransomware campaigns. Added to KEV 2021-11-03. US federal agencies must patch by 2022-05-03.
Summary
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'.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)94%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Official patch: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 ↗
Additional information
- NVD record
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688Patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688Patch
- https://www.zerodayinitiative.com/advisories/ZDI-20-258/Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-258/Advisory
- http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.htmlAdvisory
- http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.htmlAdvisory
- http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.htmlAdvisory
- http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.htmlAdvisory