PT-2025-15485 · Microsoft · Windows Telephony Service+1

Published 2025-04-08 · Updated 2025-07-03 · CVE-2025-21222

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Windows Telephony Service (affected versions not specified)

Description: The issue is related to a heap-based buffer overflow in the Windows Telephony Service, which allows an unauthorized attacker to execute code over a network. This enables remote attackers to execute arbitrary code and affect the system. The vulnerability is associated with a buffer overflow operation in memory, allowing a remote attacker to execute arbitrary code.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2025-04217

CVE-2025-21222

Affected Products

Windows

Windows Telephony Service

References · 10

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21222 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21222 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21222 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21222 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21222 · Security Note
• https://bdu.fstec.ru/vul/2025-04217 · Security Note
• https://twitter.com/dailycve/status/1940796405901414615 · Twitter Post
• https://t.me/cvenotify/127576 · Telegram Post
• https://twitter.com/CVEnew/status/1909906958192173464 · Twitter Post
• https://twitter.com/vuldb/status/1909664310210838888 · Twitter Post