CVE-2026-45498Medium· 4.0▾ Midnight⚠ Exploited in the wild0dayPoC availableMicrosoft Defender Denial of Service Vulnerability
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 22 · likelihood 12.6 · exploitation 25
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 2.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Jun 3, 2026
Last analysed / modified upstream
63%
1 GitHub repo
Added to the CISA catalog on May 20, 2026. Federal remediation due Jun 3, 2026. View catalog ↗
Microsoft Defender Denial of Service Vulnerability
defender_antimalware_platform < 4.18.26040.7Upgrade past the affected range:
defender_antimalware_platform 4.18.26040.7Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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