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CVE

CVE-2021-43896

Microsoft PowerShell Spoofing Vulnerability

Microsoft PowerShell Spoofing Vulnerability.

MEDIUM · CVSS 5.5 EPSS 0.07586
Monitor
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
Sigma rules8 YARA rules0
▤

Affected Products & Versions

1
microsoft powershell>= 7.2 and < 7.2.1
◈

Sigma Hunt Rules

8
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.
productcriticalBad Opsec Powershell Code Artifacts
productcriticalSuspicious PowerShell Mailbox Export to Share - PS
productcriticalSuspicious PowerShell Mailbox Export to Share
productcriticalHackTool - Empire PowerShell UAC Bypass
productcriticalHackTool - DInjector PowerShell Cradle Execution
producthighDelete Volume Shadow Copies Via WMI With PowerShell
▣

Scoring & Timeline

5.5
MEDIUM · 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 NVD15 Dec 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2021-43896Spoofing
🔗

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-2021-43896PatchVendor Advisory
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