PT-2025-1155 · Microsoft · Windows Telephony Service+1

Published 2025-01-14 · Updated 2025-01-24 · CVE-2025-21252

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 vulnerability in the Windows Telephony Service is related to a buffer overflow in dynamic memory, allowing remote attackers to execute arbitrary code by sending a request to the server. This issue can be exploited by remote attackers, potentially affecting a large number of Internet users. The vulnerability allows remote attackers to execute arbitrary code and affect the system.

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:2025-00436

CVE-2025-21252

Affected Products

Windows

Windows Telephony Service

References · 9

• https://bdu.fstec.ru/vul/2025-00436 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21252 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21252 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/716862 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21252 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21252 · Security Note
• https://osv.dev/vulnerability/CVE-2025-21252 · Vendor Advisory
• https://t.me/cvenotify/108575 · Telegram Post
• https://twitter.com/dailycve/status/1882936675338219558 · Twitter Post