CVE-2026-50383
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Buffer Over-Read in Windows Print Spooler Components

Vulnerability report for CVE-2026-50383, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Buffer over-read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published
2026-07-14
Last Modified
2026-07-22
Generated
2026-08-04
AI Q&A
2026-07-15
EPSS Evaluated
2026-08-02
NVD
EUVD

Affected Vendors & Products

Showing 17 associated CPEs
Vendor Product Version / Range
microsoft windows_11_26h1 to 10.0.28000.2269 (exc)
microsoft windows_10_1809 to 10.0.17763.9020 (exc)
microsoft windows_10_1809 to 10.0.17763.9020 (exc)
microsoft windows_server_2019 to 10.0.17763.9020 (exc)
microsoft windows_server_2022 to 10.0.20348.5386 (exc)
microsoft windows_server_2025 to 10.0.26100.33158 (exc)
microsoft windows_11_26h1 to 10.0.28000.2525 (exc)
microsoft windows_11_24h2 to 10.0.26100.8875 (exc)
microsoft windows_11_24h2 to 10.0.26100.8875 (exc)
microsoft windows_10_21h2 to 10.0.19044.7548 (exc)
microsoft windows_10_21h2 to 10.0.19044.7548 (exc)
microsoft windows_10_21h2 to 10.0.19044.7548 (exc)
microsoft windows_10_22h2 to 10.0.19045.7548 (exc)
microsoft windows_10_22h2 to 10.0.19045.7548 (exc)
microsoft windows_10_22h2 to 10.0.19045.7548 (exc)
microsoft windows_11_25h2 to 10.0.26200.8875 (exc)
microsoft windows_11_25h2 to 10.0.26200.8875 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-126 The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

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Executive Summary

This is a buffer over-read vulnerability in Windows Print Spooler Components. It allows an authorized attacker to read beyond the intended buffer memory, potentially exposing sensitive information stored in memory.

Impact Analysis

An attacker could exploit this to access confidential data on your system, such as passwords or personal files, if they have local access. This could lead to further attacks or data breaches.

Compliance Impact

This vulnerability could result in unauthorized data exposure, violating GDPR and HIPAA requirements for protecting personal and health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Print Spooler Components vulnerability. Monitor Microsoft's update guide for the specific patch release.

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