CVE-2025-27477 Details
Description
Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.
A heap-based buffer overflow vulnerability has been identified in the Windows Telephony Service. This vulnerability allows an unauthorized attacker to execute code remotely over a network. The issue arises from the way the Telephony Service handles certain data, potentially leading to arbitrary code execution on the affected system.
Security updates for this vulnerability are available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base article KB5055547 for Windows 10 (both x64-based and 32-bit systems), KB5055523 for Windows Server 2025, and KB5055528 for Windows 11 Version 23H2 (x64-based systems).
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 8, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27477 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1507 | < 10.0.10240.20978 |
CPE
Remediation
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| microsoft windows 10 1607 | < 10.0.14393.7969 |
CPE
Remediation
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| microsoft windows 10 1809 | < 10.0.17763.7136 |
CPE
Remediation
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| microsoft windows 10 21h2 | < 10.0.19044.5737 |
CPE
Remediation
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| microsoft windows 10 22h2 | < 10.0.19045.5737 |
CPE
Remediation
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| microsoft windows 11 22h2 | < 10.0.22621.5189 |
CPE
Remediation
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| microsoft windows 11 23h2 | < 10.0.22631.5189 |
CPE
Remediation
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| microsoft windows 11 24h2 | < 10.0.26100.3775 |
CPE
Remediation
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| microsoft windows server 2008 | r2 sp1 |
CPE
Remediation
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| microsoft windows server 2012 | r2 |
CPE
Remediation
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| microsoft windows server 2016 | < 10.0.14393.7969 |
CPE
Remediation
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| microsoft windows server 2019 | < 10.0.17763.7136 |
CPE
Remediation
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| microsoft windows server 2022 | < 10.0.20348.3453 |
CPE
Remediation
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| microsoft windows server 2022 23h2 | < 10.0.25398.1551 |
CPE
Remediation
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| microsoft windows server 2025 | < 10.0.26100.3775 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2025 | Initial Analysis | [email protected] |
| Apr 8, 2025 | New CVE Received | [email protected] |