An elevation of privilege vulnerability exists in Windows 10 Update Assistant in the way it handles permissions.A locally authenticated att…

published 2019-10-10 7y ago modified 2026-06-17 4mo ago also EUVD-2019-9935

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

An elevation of privilege vulnerability exists in Windows 10 Update Assistant in the way it handles permissions.A locally authenticated attacker could run arbitrary code with elevated system privileges, aka 'Windows 10 Update Assistant Elevation of Privilege Vulnerability'.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1378 advisory

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Exploit prediction

1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

Microsoft Windows Update Assistant

Classification

Weakness

CWE-732 Incorrect Permission Assignment for Critical Resource

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2019-1378
patch, vendor-advisory

Sources

CVE List CVE-2019-1378
NVD CVE-2019-1378

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