How severe is CVE-2021-44852?

CVE-2021-44852 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44852?

CVE-2021-44852 affects Biostar Racing Gt Evo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44852?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-44852 published?

CVE-2021-44852 was published on 2022-01-01 and last updated on 2026-06-17.

CVE-2021-44852

CVE-2021-44852 is a high-severity vulnerability in Biostar Racing Gt Evo with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Biostar Racing Gt Evo
Published: 2022-01-01
Last modified: 2026-06-17

Description

An issue was discovered in BS_RCIO64.sys in Biostar RACING GT Evo 2.1.1905.1700. A low-integrity process can open the driver's device object and issue IOCTLs to read or write to arbitrary physical memory locations (or call an arbitrary address), leading to execution of arbitrary code. This is associated with 0x226040, 0x226044, and 0x226000.

Frequently asked questions

What is CVE-2021-44852?: An issue was discovered in BS_RCIO64.sys in Biostar RACING GT Evo 2.1.1905.1700. A low-integrity process can open the driver's device object and issue IOCTLs to read or write to arbitrary physical memory locations (or call an arbitrary address), leading to execution of arbitrary code. This is associated with 0x226040, 0x226044, and 0x226000.
How severe is CVE-2021-44852?: CVE-2021-44852 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44852?: CVE-2021-44852 affects Biostar Racing Gt Evo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-44852 published?: CVE-2021-44852 was published on 2022-01-01 and last updated on 2026-06-17.

References

https://nephosec.com/biostar-exploit/

Affected products (1)

cpe:2.3:a:biostar:racing_gt_evo:2.1.1905.1700:*:*:*:*:*:*:*