A vulnerability, which was classified as critical, was found in Mozilla Thunderbird up to 140.14/153.1/154. This affects an unknown part. The manipulation results in uninitialized pointer. This vulnerability was named CVE-2026-84639. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component. Weiterlesen
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CVE-2026-84639 | Mozilla Thunderbird up to 140.14/153.1/154 uninitialized pointer (EUVD-2026-69708)
A vulnerability, which was classified as critical, was found in Mozilla Thunderbird up to 140.14/153.1/154. This affects an unknown part. The manipulation results in uninitialized pointer. This vulnerability was named CVE-2026-84639. The…
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CVE-2026-84639
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title: Detect Exploitation - CVE-2026-84639 | Mozilla Thunderbird up to 140.14/153.1/154 uninitialized pointer (EUVD-2026-69708)
id: ad2cc3e3-bdae-4460-9f2f-27a2801c03e3
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-2026-84639 | Mozilla Thund" ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
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Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
GEFÄHRDET (80%)
Crown Jewels & DB
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Supply Chain Reach
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tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2026-84639 | Mozilla Thunderbird up .... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
🛡️ Angriffsfläche & Exposure
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
⚡ Empfohlene Sofortmaßnahmen
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