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CVE

CVE-2025-21245

Windows Telephony Service Remote Code Execution Vulnerability

Windows Telephony Service Remote Code Execution Vulnerability.

HIGH · CVSS 8.8 EPSS 0.00667
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-125Out-of-bounds Read
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Affected Products & Versions

15
microsoft windows 10 1507< 10.0.10240.20890
microsoft windows 10 1607< 10.0.14393.7699
microsoft windows 10 1809< 10.0.17763.6775
microsoft windows 10 21h2< 10.0.19044.5371
microsoft windows 10 22h2< 10.0.19045.5371
microsoft windows 11 22h2< 10.0.22621.4751
microsoft windows 11 23h2< 10.0.22631.4751
microsoft windows 11 24h2< 10.0.26100.2894
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Scoring & Timeline

8.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Jan 2025 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2025-21245Remote Code Execution
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