Vulnerability · Published Jul 14, 2021 · Assigned by microsoft
CVE-2021-31206Microsoft Exchange Server Remote Code Execution Vulnerability
High 7.6
In plain English
A high-severity security flaw in Microsoft Exchange Server 2013 Cumulative Update 23 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 13.0% (higher than 96% of all known vulnerabilities).
Severity (CVSS 3.1)7.6High
Exploit odds (30 days)13.0%top 3.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft Exchange Server Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 – before 15.00.1497.023 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 20 | 15.01.0 – before 15.01.2242.012 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 21 | 15.01.0 – before 15.01.2308.014 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 10 | 15.02.0 – before 15.02.0922.013 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 9 | 15.02.0 – before 15.02.0858.015 |
References
- Microsoft Exchange Server Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31206 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-826/ x_refsource_MISC, x_transferred