CVE-2022-41040
Microsoft Exchange Server Elevation of Privilege Vulnerability
- High 8.8
- Exploited: added to CISA KEV 30 Sep 2022
- Used in ransomware campaigns
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Key facts
- Published
- 3 Oct 2022
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 30 Sep 2022
- KEV fix due
- 21 Oct 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 99.956% likely to be exploited in the next 30 days, higher than 99.975% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.8CVSS 3.1, Highfrom the CNA (microsoft)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 |
|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 22 |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 12 |
|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 |
|
Timeline
- 30 Sep 2022 CVE-2022-41040 added to CISA KEV
- 30 Sep 2022 Added to the CISA KEV catalogue
- 3 Oct 2022 Published