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CVE-2019-1161

Microsoft Defender Elevation of Privilege Vulnerability

Published: Aug 14, 2019Updated: Feb 20, 2026 Sources: CVE List NVD BDUNVD-CWE-noinfo
7.1HIGH
NVD MITRE
EPSS Score
0.9%
Top 42.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability and delete protected files on an affected system once MpSigStub.exe ran again. The update addresses the vulnerability and blocks the arbitrary deletion.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Microsoft Corp
commercial·USaka microsoft, microsoft corporation
Microsoft Forefront Endpoint ProtectionOn-premSecurity Product
Security Products / endpoint-av-edr
Microsoft Security EssentialsOn-premSecurity Product
Security Products / endpoint-av-edr
Windows DefenderOn-premSecurity Product
Security Products / vuln-mgmt-scanner
forefront endpoint protection 2010On-premSecurity Product
Security Products / endpoint-av-edr
security essentialsOn-premSecurity Product
Security Products / endpoint-av-edr
system center endpoint protectionOn-premSecurity Product
Security Products / endpoint-av-edr
Microsoft Forefront Endpoint Protection 2010On-prem
Operating Systems / windows
Microsoft System Center Endpoint ProtectionOn-prem
Operating Systems / windows
and 5 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2019-1161?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1161
portal.msrc.microsoft.com
https://www.tenable.com/plugins/nessus/127910
tenable.com
https://www.cybersecurity-help.cz/vdb/SB2019081412
cybersecurity-help.cz

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