Vulnerability in Microsoft Exchange Server 2013 Cumulative Update 23
CVE-2021-31206
Microsoft Exchange Server Remote Code Execution Vulnerability
EPSS: 0.079 (92.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C.
Affected products
- Microsoft Exchange Server 2013 Cumulative Update 23 — versions 15.00.0
- Microsoft Exchange Server 2016 Cumulative Update 20 — versions 15.01.0
- Microsoft Exchange Server 2016 Cumulative Update 21 — versions 15.01.0
- Microsoft Exchange Server 2019 Cumulative Update 10 — versions 15.02.0
- Microsoft Exchange Server 2019 Cumulative Update 9 — versions 15.02.0
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31206 (x_refsource_MISC)
- www.zerodayinitiative.com/advisories/ZDI-21-826/ (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31206?
- CVE-2021-31206 is a high-severity vulnerability in Microsoft Exchange Server 2013 Cumulative Update 23. CVSS score: 7.6/10. Published 2021-07-14.
- How severe is CVE-2021-31206?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2021-31206 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.