Vulnerability in Microsoft Exchange Server 2013 Cumulative Update 23
CVE-2022-41040
Microsoft Exchange Server Elevation of Privilege Vulnerability
EPSS: 0.941 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: 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.
Affected products
- Microsoft Exchange Server 2013 Cumulative Update 23 — versions 15.00.0
- Microsoft Exchange Server 2016 Cumulative Update 22 — versions 15.0.0
- Microsoft Exchange Server 2016 Cumulative Update 23 — versions 15.01.0
- Microsoft Exchange Server 2019 Cumulative Update 11 — versions 15.02.0
- Microsoft Exchange Server 2019 Cumulative Update 12 — versions 15.02.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- Microsoft Exchange Server Elevation of Privilege Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2022-41040?
- CVE-2022-41040 is a high-severity vulnerability in Microsoft Exchange Server 2013 Cumulative Update 23. CVSS score: 8.8/10. Published 2022-10-03.
- How severe is CVE-2022-41040?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2022-41040 known to be exploited?
- Yes. CVE-2022-41040 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-09-30), indicating it is being actively exploited. 71 public proof-of-concept repositories are indexed.