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I. Basic Information for CVE-2021-21789
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0e0, the first dword passed in the input buffer is the device port to write to and the dword at offset 4 is the value to write via the OUT instruction. A local attacker can send a malicious IRP to trigger this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
无充分访问控制条件下暴露IOCTL
Source: NVD (National Vulnerability Database)
Vulnerability Title
IOBit Advanced SystemCare 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Iobit IOBit Advanced SystemCare是英国IOBit(Iobit)公司的一款系统管理实用程序。该程序主要用于扫描、修复和优化系统等。 IOBit Advanced SystemCare Ultimate 存在安全漏洞,该漏洞源于该产品14.2.0.220版本的驱动程序处理特权IO写请求的方式存在特权升级漏洞。攻击者可利用该漏洞发送恶意IRP来触发此漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-Iobit IOBit Advanced SystemCare Ultimate 14.2.0.220 -
II. Public POCs for CVE-2021-21789
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III. Intelligence Information for CVE-2021-21789
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IV. Related Vulnerabilities
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