CVE-2026-42825: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Windows Telephony Service on Windows 10 Version 1607. Exploitation requires local access with some level of authorization and can lead to privilege escalation. The CVSS vector indicates that the attack complexity is high, privileges required are low, and no user interaction is needed. Confidentiality, integrity, and availability impacts are all rated high. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the system. This could compromise system confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official patch from Microsoft is available and should be applied to affected systems running Windows 10 Version 1607 (build 10.0.14393.0). Administrators should follow the guidance in the Microsoft security update advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42825 to remediate this vulnerability.
CVE-2026-42825: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Windows Telephony Service on Windows 10 Version 1607. Exploitation requires local access with some level of authorization and can lead to privilege escalation. The CVSS vector indicates that the attack complexity is high, privileges required are low, and no user interaction is needed. Confidentiality, integrity, and availability impacts are all rated high. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the system. This could compromise system confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official patch from Microsoft is available and should be applied to affected systems running Windows 10 Version 1607 (build 10.0.14393.0). Administrators should follow the guidance in the Microsoft security update advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42825 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T14:51:12.703Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42825","vendor":"Microsoft"}]
Threat ID: 6a036562cbff5d861008cc63
Added to database: 5/12/2026, 5:37:38 PM
Last enriched: 5/12/2026, 6:08:09 PM
Last updated: 5/13/2026, 4:12:04 AM
Views: 6
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