Vulnerability in Microsoft 365 Apps
CVE-2020-16955
<p>An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.</p> <p>To exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.</p>
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.035 (88.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000
Affected products
- Microsoft 365 Apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2013 Click-To-Run (C2r) — versions 15.0.0.0
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office — versions 2013, 2019
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16955 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-16955?
- CVE-2020-16955 is a high-severity vulnerability in Microsoft 365 Apps. CVSS score: 7.8/10. Published 2020-10-16.
- How severe is CVE-2020-16955?
- High severity. CVSS v3 base score is 7.8 out of 10.