CVE-2026-45498HIGH 4.0CISA KEVEPSS p99.1%

CVE-2026-45498Microsoft Defender Denial of Service Vulnerability

Microsoft / Defender

Description

Microsoft Defender contains an unspecified vulnerability that allows for denial of service.

Scoring

CVSS 3.14.0 (HIGH)
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS63.08% probability of exploitation · percentile 99.1% · 2026-08-03T12:00:16Z
Published2026-05-20
Last modified2026-07-23

CISA KEV entry

Added to KEV: 2026-05-20

Underlying weaknesses· 1

CWE-400

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498
  2. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45498

1

TypeTargetConfidenceTier
WeaknessUncontrolled Resource Consumptioncwe-4000%live

(incoming)1

TypeTargetConfidenceTier
KEVEntryMicrosoft Defender Denial of Service Vulnerabilitykev-cve-2026-454980%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-45584
CVE
Microsoft Defender Remote Code Execution Vulnerability
CVE
Microsoft Defender SmartScreen Security Feature Bypass Vulnerability
CVE
Microsoft Defender Insufficient Granularity of Access Control Vulnerability
CVE
CVE-2026-40414
CVE
CVE-2026-21537
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.