CVE-2025-27477HIGH 8.8EPSS p69.9%

CVE-2025-27477CVE-2025-27477

Description

Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network.

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
EPSS1.45% probability of exploitation · percentile 69.9% · 2026-06-19T12:03:05Z
Published2025-04-08
Last modified2025-07-08

Underlying weaknesses· 2

CWE-122CWE-787

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27477

2

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live
WeaknessOut-of-bounds Writecwe-7870%live

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