Search/CVE-2021-42298
● CVE — High

CVE-2021-42298

VendormicrosoftProductmalware protection engineDiscoveredNov 10, 2021UpdatedAug 19, 2026

Microsoft Defender Remote Code Execution Vulnerability

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CVSS v3.1
7.8 HIGH
EPSS
5.85%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 22, 2026
▲ 0.55pp
5.29% → 5.85% over 4 tracked changes
CVSS v3.1 Detail
Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Connections
2 relationships
Timeline
disclosure → media coverage
Nov 10, 2021
Disclosure — published as a CVE record. · last revised by NVD Aug 19, 2026