CVE-2026-45498HIGH 7.5CISA KEVEPSS p82.6%

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 3.17.5 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS2.50% probability of exploitation · percentile 82.6% · 2026-06-19T12:03:05Z
Published2026-05-20
Last modified2026-05-26

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.

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Microsoft Defender Remote Code Execution Vulnerability
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CVE-2026-21537
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.