cmis_fw_update_start_download of the component Cmis. Performing a manipulation results in out-of-bounds write.This vulnerability was named CVE-2026-63995. The attack needs to be approached locally. There is no available exploit.
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CVE-2026-63995 | Linux Kernel up to 6.12.92/6.18.34/7.0.11 Cmis cmis_fw_update_start_download out-of-bounds write (CNNVD-2026-99125109)
A vulnerability marked as critical has been reported in Linux Kernel up to 6.12.92/6.18.34/7.0.11. This impacts the function cmis_fw_update_start_download of the component Cmis. Performing a manipulation results in out-of-bounds…
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A vulnerability marked as critical has been reported in Linux Kernel up to 6.12.92/6.18.34/7.0.11. This impacts the function
This vulnerability was named CVE-2026-63995. The attack needs to be approached locally. There is no available exploit.
This vulnerability was named CVE-2026-63995. The attack needs to be approached locally. There is no available exploit.
IoC Intelligence (1 Indikatoren)
CVE-2026-63995
CTI Threat Relationship Graph3 Knoten / 2 Relationen
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title: Detect Exploitation - CVE-2026-63995 | Linux Kernel up to 6.12.92/6.18.34/7.0.11 Cmis cmis_fw_update_start_download out-of-bounds write (CNNVD-2026-99125109)
id: 9a425fb8-a2bc-4993-b28d-55255b1d038c
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-2026-63995 | 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-2026-63995 | Linux Kernel up to 6.12.... 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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