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MEDIUM · 4.0

CVE-2026-45498

Microsoft Defender Denial of Service Vulnerability

Vulnerability Description

Microsoft Defender Denial of Service Vulnerability

CVSS Score

4.0

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW

Affected Products

VendorProductVersions
MicrosoftDefender Antimalware Platform>= 4.18.26030.3011, < 4.18.26040.7

Related Weaknesses (CWE)

CWE-400

References

FAQ

What is CVE-2026-45498?

CVE-2026-45498 is a vulnerability with a CVSS score of 4.0 (MEDIUM). Microsoft Defender Denial of Service Vulnerability

How severe is CVE-2026-45498?

CVE-2026-45498 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-45498?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Defender Antimalware Platform.