Disclosure summary
Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Source-reported weakness categories
CWE-20
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2025-Oct
Open original source · Updated Oct 14, 2025
Microsoft Exchange Server Spoofing Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.5
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | Microsoft Exchange Server Subscription Edition RTM | (MSRC status code 3) |
| Microsoft update guide | Microsoft Exchange Server 2019 Cumulative Update 15 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Exchange Server 2016 Cumulative Update 23 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Exchange Server 2019 Cumulative Update 14 | (MSRC status code 3) |
Vendor remediation references
- 5066366 · build 15.02.2562.029 · product IDs 16792
- Vendor guidance · product IDs 16792
- 5066367 · build 15.02.1748.039 · product IDs 12502
- Vendor guidance · product IDs 12502
- 5066369 · build 15.01.2507.061 · product IDs 12039
- Vendor guidance · product IDs 12039
- 5066368 · build 15.02.1544.036 · product IDs 12293
- Vendor guidance · product IDs 12293
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-10-14T03:00:00-04:00
MODIFIED 2025-10-14T03:00:00-04:00
INGESTED 2026-10-08T12:45:32-04:00