HIGHCVSS v3.1 8.8Actively exploited · CISA KEV since 2021-11-03Vulnerability
CVE-2020-0688
Microsoft Exchange Server Validation Key fails to properly create unique keys at install time, allowing for remote code execution.
Properties
- Euvd product
- Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30, Microsoft Exchange Server 2019 Cumulative Update 4, Microsoft Exchange Server 2016 Cumulative Update 15, Microsoft Exchange Server 2019 Cumulative Update 3, Microsoft Exchange Server 2016 Cumulative Update 14, Microsoft Exchange Server 2013
- Vulnerability name
- Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability
- First seen
- 2025-10-21T23:35:51+00:00
- Cvss score
- 8.8
- Epss score
- 0.99962
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2022-05-03
- Euvd assigner
- microsoft
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2021-11-03T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2021-11-03
- Score
- 8.8
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Microsoft
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 8.8
Related Entities (10)
AFFECTS_PRODUCT (6)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
MENTIONED_IN (1)
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