kvm_mmu_max_mapping_level of the component Kvm Mmu. This manipulation of the argument gfn causes out-of-bounds read.This vulnerability appears as CVE-2026-63807. The attack may be initiated remotely. There is no available exploit.
Intelligence View
⚡ tsecurity.de Intelligence
CVE-2026-63807 | Linux Kernel up to 7.1.2 Kvm Mmu kvm_mmu_max_mapping_level gfn out-of-bounds (EUVD-2026-45473)
A vulnerability, which was classified as critical, has been found in Linux Kernel up to 7.1.2. Impacted is the function kvm_mmu_max_mapping_level of the component Kvm Mmu. This manipulation of the argument gfn causes out-of-bounds…
Reagiere als Erste:r — dein Feedback zählt!
A vulnerability, which was classified as critical, has been found in Linux Kernel up to 7.1.2. Impacted is the function
This vulnerability appears as CVE-2026-63807. The attack may be initiated remotely. There is no available exploit.
This vulnerability appears as CVE-2026-63807. The attack may be initiated remotely. There is no available exploit.
IoC Intelligence (1 Indikatoren)
CVE-2026-63807
CTI Threat Relationship Graph2 Knoten / 1 Relationen
IR-PLAYBOOK-VULN-REMEDIATIONMEDIUM
Schritte anzeigen
SOC Incident Playbook: Vulnerability Remediation & Verification
1-Click Detection Engineering: Sigma & YARA RulesSOC Ready
Regeln anzeigen
title: Detect Exploitation - CVE-2026-63807 | Linux Kernel up to 7.1.2 Kvm Mmu kvm_mmu_max_mapping_level gfn out-of-bounds (EUVD-2026-45473)
id: 536b81f2-1519-44b6-97ed-14abe0985905
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-2026-63807 | Linux Kernel " ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
LOCALIZED
Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
Geringes Risiko
Crown Jewels & DB
Geringes Risiko
Supply Chain Reach
GEFÄHRDET (90%)
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2026-63807 | Linux Kernel up to 7.1..... 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.
🔗 Semantisch verwandte Zero-Days
MariaDB 11.7 VEC
Synthetische RAG-Antwort
SOCIAL SHARE CARD GENERATOR