What is CVE-2021-42683?

CVE-2021-42683 is a high-severity vulnerability in Accops Hyworks Windows Client, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2021-12-07.

How severe is CVE-2021-42683?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Accops Hyworks Windows Client

CVE-2021-42683

A Buffer Overflow vulnerability exists in Accops HyWorks Windows Client prior to v 3.2.8.200. The IOCTL Handler 0x22001B allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (37.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Accops Hyworks_windows_client
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42683?: CVE-2021-42683 is a high-severity vulnerability in Accops Hyworks Windows Client, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2021-12-07.
How severe is CVE-2021-42683?: High severity. CVSS v3 base score is 8.8 out of 10.