CVE-2025-59248
published 2025-10-14CVE-2025-59248: Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
PriorityP346high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
1.02%
63.1th percentile
Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Affected
46 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
vendor_msrc7.5HIGH
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Microsoft
Microsoft Exchange Server Spoofing Vulnerability
vendor_msrc·2025-10-14·CVSS 7.5
CVE-2025-59248 [HIGH] CWE-20 Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability
Description: Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Microsoft Exchange Server: Microsoft Exchange Server
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Spoofing
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://www.microsoft.com/en-us/download/details.aspx?id=108422
Reference: https://support.microsoft.com/help/5066366
Reference: https://www.microsoft.com/en-us/download/details.aspx?id=108419
Reference: https://support.microsoft.com/help/5066367
Reference: https://www.microsoft.com/en-us/download/details.aspx?id=108420
Reference: https://support.microsoft.com/help/506
GHSA
GHSA-4fp2-p8gm-qx95: Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network
ghsa_unreviewed·2025-10-14
CVE-2025-59248 [HIGH] CWE-20 GHSA-4fp2-p8gm-qx95: Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network
Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
No detection rules found.
No public exploits indexed.
Qualys
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review | Qualys
blogs_qualys·2025-10-14
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for October 2025
- Adobe Patches for October 2025
- Zero-day Vulnerabilities Patched in October Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response with TruRisk Eliminate
- Automating Risk Elimination and Accelerating Response: Meet Agent Sara
- EVALUATE Vendor-Suggested Mitigation withPolicy Audit
- Qualys Monthly Webinar Series
As cybersecurity threats evolve, Microsoft’s October 2025 Patch Tuesday delivers one of the most comprehensive security updates of the year. Here’s a quick breakdown of what you need t
Qualys
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review
blogs_qualys·2025-10-14
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for October 2025
Adobe Patches for October 2025
Zero-day Vulnerabilities Patched in October Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response with TruRisk Eliminate
Automating Risk Elimination and Accelerating Response: Meet Agent Sara
EVALUATE Vendor-Suggested Mitigation withPolicy Audit
Qualys Monthly Webinar Series
As cybersecurity threats evolve, Microsoft’s October 2025 Patch Tuesday delivers one of the most comprehensive security updates of the year. Here’s a quick breakdown of what you need to know.
## Mi
Bleepingcomputer
Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
blogs_bleepingcomputer·2025-10-14·CVSS 7.8
[HIGH] Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
## Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
## Lawrence Abrams
80 Elevation of Privilege Vulnerabilities
11 Security Feature Bypass Vulnerabilities
31 Remote Code Execution Vulnerabilities
28 Information Disclosure Vulnerabilities
11 Denial of Service Vulnerabilities
10 Spoofing Vulnerabilities
When BleepingComputer reports on the Patch Tuesday security updates, we only count those released today by Microsoft. Therefore, the number of flaws does not include those fixed in Azure, Mariner, Microsoft Edge, and other vulnerabilities earlier this month.
Notably, Windows 10 reaches the end of support today , with this being the last Patch Tuesday where Microsoft provides free security updates to the venerable operating system.
To continue receiving security upd
2025-10-14
Published