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Fencer Intel
high 7.1

CVE-2019-1161 json

Microsoft Defender Elevation of Privilege Vulnerability

published 7y ago modified 4mo ago also EUVD-2019-9733

cvss
7.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

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.

Patch / fix

Is CVE-2019-1161 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 6.6 AV:L/AC:L/Au:N/C:N/I:C/A:C

Affected products

  • Microsoft Microsoft Forefront Endpoint Protection 2010
  • Microsoft Microsoft System Center Endpoint Protection
  • Microsoft Microsoft System Center 2012 R2 Endpoint Protection
  • Microsoft Microsoft Security Essentials
  • Microsoft Microsoft System Center 2012 Endpoint Protection
  • Microsoft Windows Defender

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.