CVE-2025-21403

Name: CVE-2025-21403
Creator: NVD / NIST
Published: 2025-01-14T18:16:04.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.4/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2025-21403 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. On-Premises Data Gateway Information Disclosure Vulnerability. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

On-Premises Data Gateway Information Disclosure Vulnerability

Metrics

CVSS 3.1

6.4/10

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

EPSS Probability

0.58%

43.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Microsoft	On-Prem Data Gateway	< 3000.246

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21403Patch, Vendor Advisory

Timeline

Published: Jan 14, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-21403?

On-Premises Data Gateway Information Disclosure Vulnerability

How severe is CVE-2025-21403?

CVE-2025-21403 has a CVSS score of 6.4/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2025-21403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-21403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST