Vulnerability in Microsoft 365 Apps
CVE-2021-40454
Rich Text Edit Control Information Disclosure Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
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 2019 For Mac — versions 16.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
- Microsoft Office — versions 2013, 2013_rt, 2016
- Microsoft Windows 10 — versions 20h2, 21h1, 1607
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40454 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-40454?
- CVE-2021-40454 is a medium-severity vulnerability in Microsoft 365 Apps, classified under Cleartext Storage of Sensitive Information. CVSS score: 5.5/10. Published 2021-10-13.
- How severe is CVE-2021-40454?
- Medium severity. CVSS v3 base score is 5.5 out of 10.