A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office…

Description

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'.

Scores

EPSS (exploitation in 30 days)

4.2% · top 8.9% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.

Weakness

• Spoofing
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• Microsoft · Microsoft Office

  • affected 2013 Service Pack 1 (32-bit editions)
  • affected 2013 Service Pack 1 (64-bit editions)
  • affected 2013 RT Service Pack 1
  • affected 2016 (32-bit edition)
  • affected 2016 (64-bit edition)
  • affected 2019 for 32-bit editions
  • affected 2019 for 64-bit editions

• Microsoft · Office 365 ProPlus

  • affected 32-bit Systems
  • affected 64-bit Systems

References (1)

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1109 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-1109](https://trackcve.app/badge/CVE-2019-1109.svg)](https://trackcve.app/cve/CVE-2019-1109)

Record last updated 4 Aug 2024, 18:06 UTC.