Risk Scores
CVSS v3.1
9
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft Exchange Server 2013 Cumulative Update 23 <15.00.1497.028 | ||
| Microsoft Exchange Server 2019 Cumulative Update 10 <15.02.0922.020 | ||
| Microsoft Exchange Server 2019 Cumulative Update 11 <15.02.0986.015 | ||
| Microsoft Exchange Server 2016 Cumulative Update 21 15.01.2308.021 | ||
| Microsoft Exchange Server 2016 Cumulative Update 22 <15.01.2375.018 | ||
| Microsoft Exchange Server 2016 Cumulative Update 22 15.01.2375.018 | ||
| Microsoft Exchange Server 2016 Cumulative Update 21 <15.01.2308.021 | ||
| Microsoft Exchange Server 2019 Cumulative Update 10 15.02.0922.020 | ||
| Microsoft Exchange Server 2013 Cumulative Update 23 15.00.1497.028 | ||
| Microsoft Exchange Server 2019 Cumulative Update 11 15.02.0986.015 |
Timeline
- Jan 11, 2022 CVE Published
- Apr 9, 2026 Security Advisory
- Apr 9, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21855 advisory
- https://msrc.microsoft.com/csaf/2022/msrc_cve-2022-21855.json advisory
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 url
- https://support.microsoft.com/lifecycle url
- https://www.first.org/cvss url
- https://support.microsoft.com/help/5008631 fix