PT-2026-88001 · Microsoft · Windows+8

CVE-2026-78457

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Published

2026-09-08

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Updated

2026-09-12

CVSS v3.1

7.0

High

VectorAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
🚨 HIGH Severity: CVE-2026-78457 (CVSS 7.0)
Use-after-free flaw in Windows Security Health Service enables local privilege escalation by authenticated attackers.
Patch immediately.
#CVE #Vulnerability #PatchNow #ThreatIntel #DFIR https://t.co/izz322NDMZ

Fix

LPE

Use After Free

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Weakness Enumeration

Related Identifiers

CVE-2026-78457

Affected Products

Windows
Windows 11 Version 24H2
Windows 11 Version 25H2
Windows 11 Version 26H1
Windows Server 2022
Windows Server 2025
Windows 11 24H2
Windows 11 25H2
Windows 11 26H1