A vulnerability, which was classified as very critical, was found in CryptoPro Secure Disk for BitLocker up to 7.7.3. This affects an unknown part of the file bootxsa.efi. Such manipulation leads to improper validation of integrity check value. This vulnerability is documented as CVE-2025-59327. The attack needs to be performed locally. There is... Weiterlesen
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CVE-2025-59327 | CryptoPro Secure Disk for BitLocker up to 7.7.3 bootxsa.efi integrity check
A vulnerability, which was classified as very critical, was found in CryptoPro Secure Disk for BitLocker up to 7.7.3. This affects an unknown part of the file bootxsa.efi. Such manipulation leads to improper validation of integrity check…
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IoC Intelligence (1 Indikatoren)
CVE-2025-59327
IR-PLAYBOOK-VULN-REMEDIATIONMEDIUM
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title: Detect Exploitation - CVE-2025-59327 | CryptoPro Secure Disk for BitLocker up to 7.7.3 bootxsa.efi integrity check
id: 20ea9f0f-a8df-4a97-96fc-f6d3824fc952
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-2025-59327 | CryptoPro Sec" 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-2025-59327 | CryptoPro Secure Disk f.... 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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