CVE-2021-1730

MediumCVSS 5.4/10Last modified Jun 17, 2026

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>

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected software

No affected versions have been published.

Timeline

Published
Feb 25, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-1730: Medium severity, CVSS 5.4 | Vulnix