CVE-2020-0647

5.4 mediumEPSS 0.9%

Medium (5.4) in microsoft office online server. EPSS 0.9% chance of exploitation in the next 30 days.

A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications correctly, aka 'Microsoft Office Online Spoofing Vulnerability'.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWE: CWE-346
Published: 2020-01-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

microsoft:office_online_server

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0647
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0647

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