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Fencer Vulns
medium 5.5

CVE-2019-0540 json

A security feature bypass vulnerability exists when Microsoft Office does not validate URLs.An attacker could send a victim a specially cra…

published 2019-03-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-1312

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.8%
EPSS 10.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

A security feature bypass vulnerability exists when Microsoft Office does not validate URLs.An attacker could send a victim a specially crafted file, which could trick the victim into entering credentials, aka 'Microsoft Office Security Feature Bypass Vulnerability'.

Patch / fix

Exploit prediction

10.83% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Microsoft Microsoft Office
  • Microsoft Microsoft Excel Viewer
  • Microsoft Office 365 ProPlus
  • Microsoft Microsoft PowerPoint Viewer
  • Microsoft Microsoft Office Compatibility Pack

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.