PT-2025-1084 · Microsoft · Windows Telephony Service+1

Published 2025-01-14 · Updated 2025-01-14 · CVE-2025-21266

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 remote code execution problem in the Windows Telephony Service. It involves a buffer overflow in memory, which can be exploited by a remote attacker to execute arbitrary code. There is no information provided about the estimated number of potentially affected devices worldwide or details about real-world incidents where this issue was exploited.

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:2025-00319

CVE-2025-21266

Affected Products

Windows

Windows Telephony Service

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2025-21266 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21266 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-00319 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21266 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/716879 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21266 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21266 · Vendor Advisory
• https://twitter.com/windowsforum/status/1879247358438871419 · Twitter Post