CVE-2026-78455 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	4.3 MEDIUM	PHYSICAL	LOW	NONE	CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Windows Releases

Platform

Version

Windows 10

1607 (x64, x86)	KB5123099
1809 (x64, x86)	KB5122876
21H2 (arm64, x64, x86)	KB5122878
22H2 (arm64, x64, x86)	KB5122878

Windows 11

23H2 (arm64, x64)	KB5122880
24H2 (arm64, x64)	KB5124008
25H2 (arm64, x64)	KB5124008
26H1 (arm64, x64)	KB5124012

Windows Server 2016

Server Core	KB5123099
Standard	KB5123099

Windows Server 2019

Server Core	KB5122876
Standard	KB5122876

Common Weakness Enumeration

CWE-125 - Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer.

Vulnerability Media Exposure

[ENGLISH] Microsoft September 2026 Patch Tuesday fixes 966 flaws, 2 zero-days
Today is Microsoft's September 2026 Patch Tuesday, with security updates released for a record-breaking 966 flaws, including two actively exploited zero-day vulnerabilities. [...]
Published: 2026-09-08T14:18:05-04:00

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78455