A vulnerability was found in F5 BIG-IP and classified as critical. Affected by this issue is some unknown functionality of the component Configuration Handler. Such manipulation leads to command injection.
This vulnerability is traded as CVE-2026-41953. The attack may be launched remotely. There is no exploit available.
It is suggested to upgrade the affected component.
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⚡ tsecurity.de Intelligence
CVE-2026-41953 | F5 BIG-IP prior 17.1.3.2/17.5.1.6/21.0.0.2 Configuration command injection (K000160975 / WID-SEC-2026-1532)
A vulnerability was found in F5 BIG-IP and classified as critical. Affected by this issue is some unknown functionality of the component Configuration Handler. Such manipulation leads to command injection. This vulnerability is traded as…
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IoC Intelligence (1 Indikatoren)
CVE-2026-41953
CTI Threat Relationship Graph3 Knoten / 2 Relationen
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title: Detect Exploitation - CVE-2026-41953 | F5 BIG-IP prior 17.1.3.2/17.5.1.6/21.0.0.2 Configuration command injection (K000160975 / WID-SEC-2026-1532)
id: 26846486-e9fd-4a07-8c79-4afa6860521b
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 = "CVE-2026-41953 | F5 BIG-IP pri" 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-2026-41953 | F5 BIG-IP prior 17.1.3..... 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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