PT-2025-1055 · Microsoft · Windows Telephony Service+1

Published 2025-01-14 · Updated 2025-01-14 · CVE-2025-21223

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 buffer overflow in dynamic memory, which can be exploited by a remote attacker to execute arbitrary code. This can potentially allow the attacker to gain control over the system. The estimated number of potentially affected devices worldwide is not specified. There is no information provided 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:2025-00285

CVE-2025-21223

Affected Products

Windows

Windows Telephony Service

References · 9

• https://bdu.fstec.ru/vul/2025-00285 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21223 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21223 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21223 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21223 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/716870 · Security Note
• https://osv.dev/vulnerability/CVE-2025-21223 · Vendor Advisory
• https://vuldb.com/?id.291677 · Note
• https://twitter.com/windowsforum/status/1879262778973720852 · Twitter Post