PT-2025-1049 · Microsoft · Windows Telephony Service+1

Published 2025-01-14 · Updated 2025-01-24 · CVE-2025-21243

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 an integer overflow in the Windows Telephony Service, which can be exploited by a remote attacker to execute arbitrary code. This allows the attacker to affect the system.

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

RCE

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2025-00279

CVE-2025-21243

Affected Products

Windows

Windows Telephony Service

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2025-21243 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/716859 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21243 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21243 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21243 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21243 · Security Note
• https://bdu.fstec.ru/vul/2025-00279 · Security Note
• https://t.me/cvenotify/108567 · Telegram Post
• https://vuldb.com/?id.291697 · Note