vulnerability
Microsoft Exchange: CVE-2021-1730: Microsoft Exchange Server Spoofing Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Feb 25, 2021 | Aug 10, 2023 | Aug 12, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Feb 25, 2021
Added
Aug 10, 2023
Modified
Aug 12, 2025
Description
<p>A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user.</p>
<p>This update addresses this vulnerability.</p>
<p>To prevent these types of attacks, Microsoft recommends customers to download inline images from different DNSdomains than the rest of OWA. Please see further instructions in the FAQ to put in place this mitigations.</p>
Solutions
microsoft-exchange-exchange_server_2016_CU18-kb4571788microsoft-exchange-exchange_server_2019_CU7-kb4571787
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