A vulnerability was found in Microsoft Windows up to Server 2012 R2. It has been declared as critical. The impacted element is an unknown function of the component Digital TV Tuner. The manipulation results in privilege escalation.
This vulnerability is known as CVE-2021-43245. It is possible to launch the attack remotely. No exploit is available.
A patch should be applied to remediate this issue.
Intelligence View
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CVE-2021-43245 | Microsoft Windows up to Server 2012 R2 Digital TV Tuner privilege escalation (WID-SEC-2025-2220)
A vulnerability was found in Microsoft Windows up to Server 2012 R2. It has been declared as critical. The impacted element is an unknown function of the component Digital TV Tuner. The manipulation results in privilege escalation. This…
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IoC Intelligence (1 Indikatoren)
CVE-2021-43245
CTI Threat Relationship Graph4 Knoten / 3 Relationen
IR-PLAYBOOK-VULN-REMEDIATION
MEDIUMSOC Incident Playbook: Vulnerability Remediation & Verification
1-Click Detection Engineering: Sigma & YARA Rules
SOC Readytitle: Detect Exploitation - CVE-2021-43245 | Microsoft Windows up to Server 2012 R2 Digital TV Tuner privilege escalation (WID-SEC-2025-2220)
id: 9e2ac427-23c1-45d2-b94c-3be0495a9e8f
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.t1068rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2021-43245 | Microsoft Win" ascii wide
condition:
any of them
}Infrastructure Blast Radius & Exposure
HIGH CASCADINGPerimeter & External Ingress
GEFÄHRDET (85%)
Lateral Movement & Pivot
GEFÄHRDET (90%)
Data Stores & Crown Jewels
Geringes Risiko
Supply Chain & Cascading Reach
Geringes Risiko
SOCIAL SHARE CARD GENERATOR