A SharePoint Server vulnerability tracked as CVE-2026-65660 turned out to be far more serious than Microsoft first indicated. The company originally described it as a spoofing issue with a CVSS score of 6.5. In reality, it is an authenticated RCE flaw rated 8.8. That gap matters, because security teams that trusted the first label may have pushed... Weiterlesen
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Microsoft Upgrades SharePoint Flaw From Spoofing to 8.8 RCE
A SharePoint Server vulnerability tracked as CVE-2026-65660 turned out to be far more serious than Microsoft first indicated. The company originally described it as a spoofing issue with a CVSS score of 6.5. In reality, it is an…
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IoC Intelligence (1 Indikatoren)
CVE-2026-65660
CTI Threat Relationship Graph4 Knoten / 3 Relationen
IR-PLAYBOOK-RCEHIGH
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SOC Incident Playbook: Remote Code Execution (RCE) Defense
1-Click Detection Engineering: Sigma & YARA RulesSOC Ready
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title: Detect Exploitation - Microsoft Upgrades SharePoint Flaw From Spoofing to 8.8 RCE
id: c320e6c9-e047-4656-a289-249381397e35
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_access
- attack.t1190rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "Microsoft Upgrades SharePoint " ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: NETWORK
LOCALIZED
Perimeter & Ingress
GEFÄHRDET (75%)
Lateral Pivot & AD
Geringes Risiko
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 Microsoft Upgrades SharePoint Flaw From .... 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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