Description

Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

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windows_10_1507

2

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Vulnerable

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Vulnerable

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Vulnerable

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Vulnerable

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Vulnerable

o

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windows_server_2019

Vulnerable

o

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Vulnerable

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windows_server_2022_23h2

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windows_server_2025

Vulnerable

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21221

Vendor Advisory

Weaknesses

[email protected]

Secondary
CWE-122

CVSS impact metrics

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

8.8 · High

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2025-04-08T18:15:45.673

8 months ago

Last modified

2025-07-10T15:54:09.223

5 months ago