Vulnerability · Published Feb 25, 2021 · Assigned by microsoft
CVE-2021-24085Microsoft Exchange Server Spoofing Vulnerability
Medium 6.5
In plain English
A medium-severity security flaw in Microsoft Exchange Server 2016 Cumulative Update 18 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.6% (higher than 92% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)4.6%top 8.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
Microsoft Exchange Server Spoofing Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 8 | 15.02.0 – before publication |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 19 | 15.01.0 – before publication |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 7 | 15.02.0 – before publication |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 18 | 15.01.0 – before publication |