CVE-2025-21403Network attack vector

Authenticated information disclosure

Published Jan 14, 2025 · Updated Jun 9, 2026

Incorrect authorization in Microsoft On-premises data gateway before 3000.246 allows remote authenticated users to disclose information. Microsoft has not published the affected component or the authorization operation that mishandles access, beyond identifying SAP HANA-enabled single sign-on as the affected configuration. Exploitation requires low-privileged access, user interaction, network reachability, and an SAP HANA data source configured for single sign-on.

CVSS severity6.4
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Microsoft On-premises data gateway before 3000.246 allows remote authenticated users to disclose information. Microsoft has not published the affected component or the authorization operation that mishandles access, beyond identifying SAP HANA-enabled single sign-on as the affected configuration. Exploitation requires low-privileged access, user interaction, network reachability, and an SAP HANA data source configured for single sign-on.

The record

CVE
CVE-2025-21403
Published
Jan 14, 2025
Updated
Jun 9, 2026
Vendor
Microsoft
Product
On-premises data gateway
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <3000.246

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · On-premises data gatewayversion=1.0.0 <3000.246

Published CVSS scores

6.4Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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