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Windows Security Health Service Elevation of Privilege Vulnerability

🗓️ 08 Sep 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 16 Views

Use after free in Windows Security Health Service enabling local privilege escalation.

Related
Detection
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
Security Health Service Privilege Escalation
8 Oct 202600:00
–bdu_fstec
circl
Circl
CVE-2026-78457
8 Sep 202622:08
–circl
cve
CVE
CVE-2026-78457
8 Sep 202617:18
–cve
cvelist
Cvelist
CVE-2026-78457 Windows Security Health Service Elevation of Privilege Vulnerability
8 Sep 202617:18
–cvelist
euvd
EUVD
EUVD-2026-73810
8 Sep 202617:18
–euvd
mskb
Microsoft KB
September 8, 2026—KB5122871 (OS Build 26100.33438)
13 Oct 202614:00
–mskb
mskb
Microsoft KB
September 8, 2026—KB5122882 (OS Build 20348.5622)
13 Oct 202614:00
–mskb
mskb
Microsoft KB
September 8, 2026—KB5124012 (OS Build 28000.2954)
13 Oct 202614:00
–mskb
nvd
NVD
CVE-2026-78457
8 Sep 202618:20
–nvd
ptsecurity
Positive Technologies
PT-2026-109388
8 Sep 202600:00
–ptsecurity
Rows per page
Vulners
Node
OR
microsoftwindows_11_25h2Range<10.0.26200.9445x64
microsoftwindows_11_26h1Range<10.0.28000.2954x64
microsoftwindows_11_26h1Range<10.0.28000.2954x64
microsoftwindows_server_2025Range<10.0.26100.33438
microsoftwindows_11_24h2Range<10.0.26100.9445x64
microsoftwindows_server_2022Range<10.0.20348.5622
microsoftwindows_11_24h2Range<10.0.26100.9445x64
microsoftwindows_server_2022Range<10.0.20348.5622
microsoftwindows_11_25h2Range<10.0.26200.9445x64
microsoftwindows_server_2025Range<10.0.26100.33438

Data

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08 Sep 2026 14:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17
EPSS0.00264
SSVC
16