Vulnerability · Published Mar 2, 2021 · Assigned by microsoft
CVE-2021-26412Microsoft Exchange Server Remote Code Execution Vulnerability
Critical 9.1
In plain English
A critical-severity security flaw in Microsoft Exchange Server 2013 Cumulative Update 23 from Microsoft. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 33.8% (higher than 98% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)33.8%top 1.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
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 15.00.1497.012 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 18 | 15.01.0 – before 15.01.2106.013 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 19 | 15.01.0 – before 15.01.2176.009 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 7 | 15.02.0 – before 15.02.0721.013 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 8 | 15.02.0 – before 15.02.0792.010 |
References
- Microsoft Exchange Server Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26412 x_refsource_MISC, x_transferred