Vulnerability in Microsoft Exchange_server
CVE-2021-31209
Microsoft Exchange Server Spoofing Vulnerability
EPSS: 0.026 (83.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
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 19 — versions 15.01.0
- Microsoft Exchange Server 2016 Cumulative Update 20 — versions 15.01.0
- Microsoft Exchange Server 2019 Cumulative Update 8 — versions 15.02.0
- Microsoft Exchange Server 2019 Cumulative Update 9 — versions 15.02.0
Weakness classification (CWE)
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-2021-31209?
- CVE-2021-31209 is a medium-severity vulnerability in Microsoft Exchange_server, classified under Authentication Bypass by Spoofing. CVSS score: 6.5/10. Published 2021-05-11.
- How severe is CVE-2021-31209?
- Medium severity. CVSS v3 base score is 6.5 out of 10.