CVE-2020-1173

6.8 mediumEPSS 2.5%

Medium (6.8) in microsoft power bi report server. EPSS 2.5% chance of exploitation in the next 30 days.

A spoofing vulnerability exists in Microsoft Power BI Report Server in the way it validates the content-type of uploaded attachments. An authenticated attacker could exploit the vulnerability by uploading a specially crafted payload and sending it to the user. The attacker who successfully exploited this vulnerability could then perform actions and run scripts in the security context of the user. This security update addresses the vulnerability by ensuring Power BI Report Server properly validates content-type of the attachments when uploading and opening.

Severity

CVSS 3.1

6.8 medium

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

EPSS: 2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2020-05-21
Modified: 2026-08-19
Record from: the NVD, synced 2026-10-19

Affected

microsoft:power_bi_report_server

References

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