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CVSS 4ACTIVELY EXPLOITED4 sources verified·1 min read
By Lyrie Threat Intelligence·5/20/2026

MEDIUM: CVE-2026-45498 actively exploited — multiple vendors

CVE: CVE-2026-45498

CVSS: 4 (3.1) — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Severity: MEDIUM

Status: ✅ Confirmed exploited in the wild (CISA KEV)

Affected

_See vendor advisory_

Summary

Microsoft Defender Denial of Service Vulnerability

Verified Sources

References

  • https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.

#exploited-itw

Validated sources

  1. [1]NVD
  2. [2]GitHub Advisory
  3. [3]MITRE
  4. [4]CISA KEV

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