CVE-2025-27477 — Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507

CWE-122 — Heap-based Buffer OverflowCWE-787 — Out-of-bounds Write5 documents5 sources
Severity
8.8HIGHNVD
EPSS
3.5%
top 12.36%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
27
Microsoft Windows 10 Version 1507Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809+24 more
Timeline
PublishedApr 8

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages26 packages

▶CVEListV5microsoft/windows_server_2008_service_pack_26.0.6003.0 — 6.0.6003.23220
▶CVEListV5microsoft/windows_server_2008_r2_service_pack_16.1.7601.0 — 6.1.7601.27670
▶NVDmicrosoft/windows< 10.0.14393.7969+5
▶NVDmicrosoft/windows_10_1507< 10.0.10240.20978
▶NVDmicrosoft/windows_10_1607< 10.0.14393.7969

🔴Vulnerability Details

2
CVEList
Windows Telephony Service Remote Code Execution Vulnerability↗2025-04-08
▶
GHSA
GHSA-8844-88f7-3mwf: Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to execute code over a network↗2025-04-08
▶

📋Vendor Advisories

1
Microsoft
Windows Telephony Service Remote Code Execution Vulnerability↗2025-04-08
▶

🕵️Threat Intelligence

1
Bleepingcomputer
Microsoft April 2025 Patch Tuesday fixes exploited zero-day, 134 flaws↗2025-04-08
▶
CVE-2025-27477 — Heap-based Buffer Overflow | cvebase