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CVE

CVE-2021-42298

Microsoft Defender Remote Code Execution Vulnerability

Microsoft Defender Remote Code Execution Vulnerability.

HIGH · CVSS 7.8 EPSS 0.02275
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules12 YARA rules0
◆

Threat Actors Linked

1
actorVariston (Heliconia)
⬡

Weakness Classification

CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

1
microsoft malware protection engine< 1.1.18700.3
◈

Sigma Hunt Rules

12
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighMicrosoft Malware Protection Engine Crash
producthighMicrosoft Malware Protection Engine Crash - WER
relatedcriticalAntivirus Password Dumper Detection
relatedcriticalHacktool Execution - Imphash
relatedcriticalHackTool - Rubeus Execution
relatedcriticalPotential Credential Dumping Via LSASS Process Clone
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Nov 2021 · 01:19 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
msrcCVE-2021-42298Remote Code Execution
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42298MitigationPatchVendor Advisory
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