A vulnerability was found in Legion of the Bouncy Castle Bouncy Castle for Java, Bouncy Castle for Java LTS and Bouncy Castle for Java FIPS. It has been rated as problematic. Affected is an unknown function. This manipulation causes denial of service.
This vulnerability appears as CVE-2026-13586. The attack may be initiated remotely. There is no available exploit.
Upgrading the affected component is advised.
Intelligence View
⚡ tsecurity.de Intelligence
CVE-2026-13586 | Legion of the Bouncy Castle Bouncy Castle for Java prior 1.85/2.73.12/1.0.2.7/2.0.2/2.1.3 denial of service (WID-SEC-2026-2622)
A vulnerability was found in Legion of the Bouncy Castle Bouncy Castle for Java, Bouncy Castle for Java LTS and Bouncy Castle for Java FIPS. It has been rated as problematic. Affected is an unknown function. This manipulation causes denial…
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CVE-2026-13586
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title: Detect Exploitation - CVE-2026-13586 | Legion of the Bouncy Castle Bouncy Castle for Java prior 1.85/2.73.12/1.0.2.7/2.0.2/2.1.3 denial of service (WID-SEC-2026-2622)
id: 6b61aff0-1ef3-4c66-9e33-bb4bebc74f25
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-2026-13586 | Legion of the" 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-2026-13586 | Legion of the Bouncy Ca.... 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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