Home/CVE/A denial of service vulnerability exists when Microsoft Defender improperly handles files, aka 'Microsoft Defender Denia
CVE

CVE-2019-1255

A denial of service vulnerability exists when Microsoft Defender improperly handles files, aka 'Microsoft Defender Denia

A denial of service vulnerability exists when Microsoft Defender improperly handles files, aka 'Microsoft Defender Denial of Service Vulnerability'.

HIGH · CVSS 7.5 EPSS 0.09124
Schedule remediation
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
▤

Affected Products & Versions

4
microsoft windows defenderall versions
microsoft forefront endpoint protection 2010all versions
microsoft security essentialsall versions
microsoft system center endpoint protectionall versions
◈

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.
producthighTamper Windows Defender - PSClassic
producthighTamper Windows Defender Remove-MpPreference - ScriptBlockLogging
producthighTamper Windows Defender - ScriptBlockLogging
producthighPotential Windows Defender AV Bypass Via Dump64.EXE Rename
producthighSuspicious Uninstall of Windows Defender Feature via PowerShell
producthighWindows Defender Context Menu Removed
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Scoring & Timeline

7.5
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 NVD23 Sep 2019 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

1
msrcCVE-2019-1255Elevation of Privilege
🔗

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-2019-1255PatchVendor Advisory
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