CVE-2026-45498

UNKNOWNKnown Exploited

CISA Known Exploited Vulnerability

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-45498 ; https://nvd.nist.gov/vuln/detail/CVE-2026-45498

Remediation deadline: June 3, 2026

Description

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

Timeline

Published:May 20th, 2026 12:00 AM

Last modified:May 20th, 2026 12:00 AM

Added to KEV:May 20th, 2026

CVSS Scoring

No CVSS v3 score available

Affected Software

From NVD CPE configuration data

Vendors

Microsoft

Products

Defender

References & Reports

Advisories, patches, and third-party reports

No references available.

Source: CISA KEV + NVD · Data may lag official sources by up to one minute