CVE-2026-49172 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 59.42%

Affected Products (NVD)

Vendor	Product	Version
microsoft	windows_10_1607	𝑥 < 10.0.14393.9339
microsoft	windows_10_1809	𝑥 < 10.0.17763.9020
microsoft	windows_10_1809	𝑥 < 10.0.17763.9020
microsoft	windows_10_21h2	𝑥 < 10.0.19044.7548
microsoft	windows_10_21h2	𝑥 < 10.0.19044.7548
microsoft	windows_10_21h2	𝑥 < 10.0.19044.7548
microsoft	windows_10_22h2	𝑥 < 10.0.19045.7548
microsoft	windows_10_22h2	𝑥 < 10.0.19045.7548
microsoft	windows_10_22h2	𝑥 < 10.0.19045.7548
microsoft	windows_11_23h2	𝑥 < 10.0.22631.7376
microsoft	windows_11_23h2	𝑥 < 10.0.22631.7376
microsoft	windows_11_24h2	𝑥 < 10.0.26100.8875
microsoft	windows_11_24h2	𝑥 < 10.0.26100.8875
microsoft	windows_11_25h2	𝑥 < 10.0.26200.8875
microsoft	windows_11_25h2	𝑥 < 10.0.26200.8875
microsoft	windows_11_26h1	𝑥 < 10.0.28000.2269
microsoft	windows_11_26h1	𝑥 < 10.0.28000.2525
microsoft	windows_server_2019	𝑥 < 10.0.17763.9020
microsoft	windows_server_2022	𝑥 < 10.0.20348.5386
microsoft	windows_server_2025	𝑥 < 10.0.26100.33158

𝑥

= Vulnerable software versions

Windows Releases

Platform

Version

Windows 10

1607 (x86)	KB5099535
1809 (x64, x86)	KB5099538
21H2 (arm64, x64, x86)	KB5099539
22H2 (arm64, x64, x86)	KB5099539

Windows 11

23H2 (arm64, x64)	KB5099414
24H2 (arm64, x64)	KB5101650
25H2 (arm64, x64)	KB5101650
26H1 (arm64, x64)	KB5101649

Windows Server 2019

Server Core	KB5099538
Standard	KB5099538

Windows Server 2022

Server Core	KB5099540
Standard	KB5099540

Windows Server 2025

Server Core	KB5099536
Standard	KB5099536

Common Weakness Enumeration

CWE-122 - Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49172