Outlook
CVE-2025-21259
MEDIUM
User Interface (UI) Misrepresentation of Critical Information (CWE-451)
2025-02-11
secure@microsoft.com
5.3
CVSS 3.1 · NVD
Share
Severity by source
NVD
PRIMARY
5.3
MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Lifecycle Timeline
3
Analysis Generated
Mar 28, 2026 - 18:26 vuln.today
Patch released
Mar 28, 2026 - 18:26 nvd
Patch available
CVE Published
Feb 11, 2025 - 18:15 nvd
MEDIUM 5.3
DescriptionCVE.org
Microsoft Outlook Spoofing Vulnerability
AnalysisAI
Microsoft Outlook Spoofing Vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Technical ContextAI
This vulnerability is classified under CWE-451. Affected products include: Microsoft Outlook.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Share
External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).