CRITICALExploited in the wildUnknown

Microsoft Defender Denial of Service Vulnerability

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

CVE-2026-45498Published 2 months agoSource: CISA KEV

Affected packages

No package-level mapping for this advisory.

Exploit signal

Known exploited (CISA KEV)
Yes
EPSS score
63.08%
EPSS percentile
99.1%

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 99%.

Sources

No external sources available.

Recommended response stack

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Microsoft Defender Denial of Service Vulnerability | HackTribune