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CVE-2021-1730
MEDIUM5.4
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>
CVE Details
CVSS v3.1 Score5.4
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
Published2/25/2021
Last Modified2/24/2026
Sourcenvd
Honeypot Sightings0
Affected Products
microsoft:exchange_server
References
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1730(secure@microsoft.com)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1730(af854a3a-2127-422b-91ae-364da2661108)
IOC Correlations
No correlations recorded
This product uses data from the NVD API but is not endorsed or certified by the NVD.