A vulnerability has been found in Mozilla Thunderbird up to 140 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Frame Handler. The manipulation leads to Remote Code Execution.
This vulnerability is known as CVE-2025-8038. The attack can be launched remotely. There is no exploit available.
It is recommended to upgrade the affected component.
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CVE-2025-8038 | Mozilla Thunderbird up to 140 Frame Remote Code Execution (Nessus ID 242865)
A vulnerability has been found in Mozilla Thunderbird up to 140 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Frame Handler. The manipulation leads to Remote Code Execution. This…
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IoC Intelligence (1 Indikatoren)
CVE-2025-8038
CTI Threat Relationship Graph3 Knoten / 2 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 - CVE-2025-8038 | Mozilla Thunderbird up to 140 Frame Remote Code Execution (Nessus ID 242865)
id: df66f908-bfed-4ec3-ab52-3a5d235efd83
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-2025-8038 | Mozilla Thunde" 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 CVE-2025-8038 | Mozilla Thunderbird up t.... 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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