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TI-2025-15227 Aliases CVE-2025-21259GHSA-47m6-2q4v-m2vx

Microsoft Outlook Spoofing Vulnerability

Priority LOW 32CWE-451Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Microsoft Outlook Spoofing Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01154 67th percentileScored 2026-11-07
Fix Fixed Microsoft Outlook for Android (Microsoft): 4.2501.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Outlook for Android1.0 to before 4.2501.14.2501.1Patch availableCNA
  • Microsoft Outlook for Android VendorMicrosoft Affected 1.0 to before 4.2501.1 Fixed in 4.2501.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:outlook:*:*:*:*:*:android:*:*before 4.2501.1VulnerableMicrosoft
  • cpe:2.3:a:microsoft:outlook:*:*:*:*:*:android:*:* Versions before 4.2501.1 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Outlook for Android (Microsoft) Fixed in 4.2501.1

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft Outlook for AndroidFixed 4.2501.1 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21259
  2. 2026-10-03 Alias added: GHSA-47m6-2q4v-m2vx

References

Patch 1

  • TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-17652 Microsoft Outlook Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2007-00655 Unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac, and… KEVCVSS 3.1HIGH 8.8
  • TI-2017-08726 Memory corruption in Microsoft Outlook KEVCVSS 3.1HIGH 7.8
  • TI-2015-01471 Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1… KEVCVSS 3.1HIGH 7.8
  • TI-2006-04695 Stack-based buffer overflow in the Vector Graphics Rendering engine (vgx.dll), as used in… CVSS 2.0HIGH 9.3
See all 124 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences