CVE-2025-21371HIGH 8.8EPSS p81.5%

CVE-2025-21371CVE-2025-21371

Description

Windows Telephony Service Remote Code Execution Vulnerability

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS2.35% probability of exploitation · percentile 81.5% · 2026-06-19T12:03:05Z
Published2025-02-11
Last modified2025-03-03

Underlying weaknesses· 1

CWE-122

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21371
  2. https://www.vicarius.io/vsociety/posts/windows-telephony-service-remote-code-execution-vulnerability-detection-script
  3. https://www.vicarius.io/vsociety/posts/windows-telephony-service-remote-code-execution-vulnerability-mitigation-script

1

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.