CVE-2026-42968

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Windows Telephony Service

Publication date: 2026-06-09

Last updated on: 2026-06-11

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows Telephony Service allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-09

Last Modified

2026-06-11

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-42968

EUVD

EUVD-2026-35728

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9234 (exc)
microsoft	windows_10_1607	to 10.0.14393.9234 (exc)
microsoft	windows_10_1809	to 10.0.17763.8880 (exc)
microsoft	windows_10_1809	to 10.0.17763.8880 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_server_2016	to 10.0.14393.9234 (exc)
microsoft	windows_server_2019	to 10.0.17763.8880 (exc)
microsoft	windows_server_2022	to 10.0.20348.5256 (exc)
microsoft	windows_server_2025	to 10.0.26100.32995 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read in the Windows Telephony Service. It allows an authorized attacker to access and disclose information locally on the affected system.

Impact Analysis

The impact of this vulnerability is information disclosure. An authorized attacker could exploit this flaw to gain access to sensitive information on the local machine without causing disruption or modification to the system.

Compliance Impact

This vulnerability allows an authorized attacker to disclose information locally due to an out-of-bounds read in the Windows Telephony Service.

Information disclosure vulnerabilities can potentially impact compliance with standards and regulations such as GDPR and HIPAA, which require protection of sensitive data and personal information.

However, the provided information does not specify the exact nature or sensitivity of the disclosed information, nor does it explicitly link this vulnerability to compliance failures.

Mitigation Strategies

The vulnerability is an out-of-bounds read in the Windows Telephony Service that allows an authorized attacker to disclose information locally.

Since the vulnerability requires local authorized access, immediate mitigation steps include limiting user privileges to only those necessary and ensuring that only trusted users have access to the affected Windows Telephony Service.

Additionally, monitoring for and applying any security updates or patches provided by Microsoft for this vulnerability is recommended.

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