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NVD Vulnerability Details :
CVE-2026-45498
Analyzed
More InfoOfficial Page
Source-secure@microsoft.com
View Known Exploited Vulnerability (KEV) details
Published At-20 May, 2026 | 13:16
Updated At-26 May, 2026 | 20:00

Microsoft Defender Denial of Service Vulnerability

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
2026-05-202026-06-03Microsoft Defender Denial of Service VulnerabilityApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Date Added: 2026-05-20
Due Date: 2026-06-03
Vulnerability Name: Microsoft Defender Denial of Service Vulnerability
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.14.0MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 4.0
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches

Microsoft Corporation
microsoft
>>defender_antimalware_platform>>Versions before 4.18.26040.7(exclusive)
cpe:2.3:a:microsoft:defender_antimalware_platform:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-400Primarysecure@microsoft.com
CWE-400Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-400
Type: Primary
Source: secure@microsoft.com
CWE ID: CWE-400
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498secure@microsoft.com
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45498134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory
US Government Resource
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498
Source: secure@microsoft.com
Resource:
Vendor Advisory
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45498
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Third Party Advisory
US Government Resource
Change History
0Changes found

Details not found