What’s Vulnerable › Vulnerabilities

CVE-2021-21790

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-05 · updated 2026-06-17
• Weakness: CWE-782

Description

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) can lead to privileged reads in the context of a driver which can result in sensitive information disclosure from the kernel. The IN instruction can read two bytes from the given I/O device, potentially leaking sensitive device data to unprivileged users.

Affected products

• IObit Advanced SystemCare Utimate: 14.2.0.220

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255

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