Vulnerability in Microsoft 365 Apps
CVE-2021-43255
Microsoft Office Trust Center Spoofing Vulnerability
EPSS: 0.020 (78.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Microsoft 365_apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2013 Service Pack 1 — versions 15.0.0
- Microsoft Office 2016 — versions 16.0.0
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office — versions 2013, 2013_rt, 2016
- Microsoft Office_long_term_servicing_channel — versions 2021
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43255?
- CVE-2021-43255 is a medium-severity vulnerability in Microsoft 365 Apps. CVSS score: 5.5/10. Published 2021-12-15.
- How severe is CVE-2021-43255?
- Medium severity. CVSS v3 base score is 5.5 out of 10.