Vulnerability in Microsoft Exchange_server
CVE-2021-34470
Microsoft Exchange Server Elevation of Privilege Vulnerability
EPSS: 0.033 (87.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Exchange_server — versions 2013, 2016, 2019
- Microsoft Exchange Server 2013 Cumulative Update 23 — versions 15.00.0
- Microsoft Exchange Server 2016 Cumulative Update 21 — versions 15.01.0
- Microsoft Exchange Server 2019 Cumulative Update 10 — versions 15.02.0
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-34470?
- CVE-2021-34470 is a high-severity vulnerability in Microsoft Exchange_server. CVSS score: 8.0/10. Published 2021-07-14.
- How severe is CVE-2021-34470?
- High severity. CVSS v3 base score is 8.0 out of 10.
- Is CVE-2021-34470 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.