A vulnerability was found in Microsoft Windows and classified as very critical. Affected is an unknown function of the component Windows Biometric Service. Such manipulation leads to heap-based buffer overflow. This vulnerability is referenced as CVE-2026-83973. The attack can only be performed from a local environment. No exploit is available. It... Weiterlesen
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CVE-2026-83973 | Microsoft Windows up to Server 2025 Windows Biometric Service heap-based overflow (EUVD-2026-73903)
A vulnerability was found in Microsoft Windows and classified as very critical. Affected is an unknown function of the component Windows Biometric Service. Such manipulation leads to heap-based buffer overflow. This vulnerability is…
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IoC Intelligence (1 Indikatoren)
CVE-2026-83973
CTI Threat Relationship Graph3 Knoten / 2 Relationen
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title: Detect Exploitation - CVE-2026-83973 | Microsoft Windows up to Server 2025 Windows Biometric Service heap-based overflow (EUVD-2026-73903)
id: 52346fdc-3dbd-4675-9ddd-b8a9badea47b
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2026-83973 | Microsoft Win" ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
LOCALIZED
Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
GEFÄHRDET (80%)
Crown Jewels & DB
Geringes Risiko
Supply Chain Reach
Geringes Risiko
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2026-83973 | Microsoft Windows up to.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
🛡️ Angriffsfläche & Exposure
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
⚡ Empfohlene Sofortmaßnahmen
- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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