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CVE-2019-1337

21
FAUCET Score

CVE-2019-1337 is an information disclosure vulnerability in the Windows Update Client affecting Windows 10, Windows Server 2016, and Windows Server 2019. Rated Medium (CVSS 5.5), it allows a low-privileged attacker to disclose sensitive information due to improper memory handling, requiring local access but no user interaction. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing. While it received minimal community discussion and media coverage, it was addressed in Microsoft's October 2019 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
1809CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
1903CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
1903CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 99th percentile among its peer group of 15,938 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1903 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019 (Server Core installation)
View patch

Vendor Advisories (1)

microsoft2019-Oct/CVE-2019-1337Important

Windows Update Client Information Disclosure Vulnerability

Oct 8, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-1337
PatchVendor Advisory