Improper input validation in Microsoft Office
CVE-2019-1109
A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office documents.An attacker who successfully exploited this vulnerability could read or write information in Office documents.The security update addresses the vulnerability by correcting the way that Microsoft Office Javascript verifies trusted web pages., aka 'Microsoft Office Spoofing Vulnerability'.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.042 (90.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Microsoft Office — versions 2013 Service Pack 1 (32-bit editions), 2013 Service Pack 1 (64-bit editions), 2013 RT Service Pack 1
- Microsoft Office — versions 2013, 2016, 2019
- Microsoft Office 365
- Microsoft Office 365 Proplus — versions 32-bit Systems, 64-bit Systems
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1109 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-1109?
- CVE-2019-1109 is a critical-severity vulnerability in Microsoft Office, classified under Improper Input Validation. CVSS score: 9.1/10. Published 2019-07-15.
- How severe is CVE-2019-1109?
- Critical severity. CVSS v3 base score is 9.1 out of 10.