CVE-2020-1044

SQL Server Reporting Services Security Feature Bypass Vulnerability

MEDIUM
4.3
CVSS Score
Published: September 11, 2020 at 05:08 PM UTC
Updated: June 17, 2026 at 03:00 AM UTC
3 products affected across 1 vendorSQL Server Reporting ServicesSQL Server 2019 Reporting ServicesSQL Server 2017 Reporting Services

Using SQL Server 2017 Reporting Services by Microsoft?

Get instant alerts when new vulnerabilities affect SQL Server 2017 Reporting Services - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.3
Exploit prediction
EPSS 2%

Description

<p>A security feature bypass vulnerability exists in SQL Server Reporting Services (SSRS) when the server improperly validates attachments uploaded to reports. An attacker who successfully exploited this vulnerability could upload file types that were disallowed by an administrator.</p> <p>To exploit the vulnerability, an authenticated attacker would need to send a specially crafted request to an affected SSRS server.</p> <p>The update addresses the vulnerability by modifying how SSRS validates attachment uploads.</p>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

14.0.0 ≤ v < publication14.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < publication15.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

4.3MEDIUMmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card