CVE-2020-1173

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.

CVSS v3 6.8 MEDIUM
CVSS v2.0 3.5 LOW

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:M/Au:S/C:N/I:P/A:N

Exploitability : 6.8 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1173
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1173	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:power_bi_report_server:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-05-21 23:15

Updated : 2026-08-19 17:17

NVD link : CVE-2020-1173

Mitre link : CVE-2020-1173

CVE.ORG link : CVE-2020-1173

JSON object : View

Products Affected

microsoft

power_bi_report_server

CWE

CWE-20

Improper Input Validation

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