A vulnerability categorized as critical has been discovered in OpenSSL up to 3.6.1. This affects an unknown function of the component DANE Client Code. The manipulation results in use after free.
This vulnerability is reported as CVE-2026-28387. The attack can be launched remotely. No exploit exists.
It is advisable to upgrade the affected component.
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CVE-2026-28387 | OpenSSL up to 3.6.1 DANE Client Code use after free (EUVD-2026-19961)
A vulnerability categorized as critical has been discovered in OpenSSL up to 3.6.1. This affects an unknown function of the component DANE Client Code. The manipulation results in use after free. This vulnerability is reported as…
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IoC Intelligence (1 Indikatoren)
CVE-2026-28387
CTI Threat Relationship Graph2 Knoten / 1 Relationen
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title: Detect Exploitation - CVE-2026-28387 | OpenSSL up to 3.6.1 DANE Client Code use after free (EUVD-2026-19961)
id: 445c8889-fe82-4b79-98c0-220c13dc9b58
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-2026-28387 | OpenSSL up to" 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-2026-28387 | OpenSSL up to 3.6.1 DAN.... 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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