What is CVE-2021-44968?

CVE-2021-44968 is a high-severity vulnerability in Iobit Advanced Systemcare, classified under Use After Free. CVSS score: 7.8/10. Published 2022-02-18.

How severe is CVE-2021-44968?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Iobit Advanced Systemcare

CVE-2021-44968

A Use after Free vulnerability exists in IOBit Advanced SystemCare 15 pro via requests sent in sequential order using the IOCTL driver codes, which could let a malicious user execute arbitrary code or a Denial of Service (system crash). IOCTL list: iobit_ioctl = [0x8001e01c, 0x8001e020, 0x8001e024, 0x8001e040,0x8001e044, 0x8001e048, 0x8001e04c, 0x8001e000, 0x8001e004, 0x8001e008, 0x8001e00c, 0x8001e010, 0x8001e014, 0x8001e018]

Vulnerability class: Use-After-Free

Published 2022-02-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Iobit Advanced Systemcare — versions 15

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/iobit_advenced_sys… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-44968?: CVE-2021-44968 is a high-severity vulnerability in Iobit Advanced Systemcare, classified under Use After Free. CVSS score: 7.8/10. Published 2022-02-18.
How severe is CVE-2021-44968?: High severity. CVSS v3 base score is 7.8 out of 10.