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 7y ago modified 2026-06-17 4mo 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

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

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0540 advisory

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Exploit prediction

10.83% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2019-0540
patch, vendor-advisory
securityfocus.com /bid/106863
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-0540
NVD CVE-2019-0540

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