CVE-2021-31207
Microsoft Exchange Server Security Feature Bypass Vulnerability
Microsoft Exchange Server Security Feature Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-31207
Description
Microsoft Exchange Server Security Feature Bypass Vulnerability
Severity
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 to <15.00.1497.018 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 9 | 15.02.0 to <15.02.0858.012 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 20 | 15.01.0 to <15.01.2242.010 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 19 | 15.01.0 to <15.01.2176.014 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 8 | 15.02.0 to <15.02.0792.015 |
References
3 LinksRecord Details
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.