Cyber Posture

CVE-2025-21406

High

Published: 11 February 2025

Published
11 February 2025
Modified
14 February 2025
KEV Added
—
Patch
—
CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0016 37.1th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Description

Windows Telephony Service Remote Code Execution Vulnerability

Security Summary

CVE-2025-21406 is a remote code execution vulnerability in the Windows Telephony Service. Published on 2025-02-11, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and is linked to CWE-416 (Use After Free), with additional NVD-CWE-noinfo classification.

A remote unauthenticated attacker can exploit this vulnerability over the network with low attack complexity, though it requires user interaction. Successful exploitation enables high-impact consequences, including unauthorized access to sensitive data, modification of system integrity, and disruption of availability through arbitrary code execution on the affected Windows system.

Microsoft's update guide provides details on mitigation and patches for CVE-2025-21406 at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21406.

Details

CWE(s)
CWE-416NVD-CWE-noinfo

Affected Products

microsoft
windows 10 1507
≤ 10.0.10240.20915 · ≤ 10.0.10240.20915
microsoft
windows 10 1607
≤ 10.0.14393.7785 · ≤ 10.0.14393.7785
microsoft
windows 10 1809
≤ 10.0.17763.6893 · ≤ 10.0.17763.6893
microsoft
windows 10 21h2
≤ 10.0.19044.5487
microsoft
windows 10 22h2
≤ 10.0.19045.5487
microsoft
windows 11 22h2
≤ 10.0.22621.4890
microsoft
windows 11 23h2
≤ 10.0.22631.4890
microsoft
windows 11 24h2
≤ 10.0.26100.3194
microsoft
windows server 2008
all versions, r2
microsoft
windows server 2012
all versions, r2
+5 more product configuration(s) — see NVD for full list

References