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CVE-2018-8140

24
FAUCET Score

CVE-2018-8140 describes an Elevation of Privilege vulnerability in Cortana affecting Windows 10 and Windows Server versions. This flaw allows an attacker to gain elevated privileges by manipulating Cortana's data retrieval from user input services, even on a locked device. With a CVSS score of 6.8 (Medium), the vulnerability has a high impact on confidentiality, integrity, and availability, requiring physical access but no user interaction. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit or ExploitDB, it has garnered significant community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
1709CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
1803CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:*
1709CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2016:1709:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.64%
Probability of exploitation in next 30 days
EPSS Percentile
74.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0164 is in the 98th percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1803 (Server Core Installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1709 (Server Core Installation)
View patch

Vendor Advisories (1)

microsoft2018-Jun/CVE-2018-8140Important

Cortana Elevation of Privilege Vulnerability

Jun 12, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8140
PatchVendor Advisory
securityfocus.com / bid/104354
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041108
Third Party AdvisoryVDB Entry