What is CVE-2021-42990?

CVE-2021-42990 is a high-severity vulnerability in Flexihub, 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-2021-42990?

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

Buffer overflow in Flexihub

CVE-2021-42990

FlexiHub For Windows is affected by Buffer Overflow. IOCTL Handler 0x22001B in the FlexiHub For Windows above 2.0.4340 below 5.3.14268 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

Flexihub
Microsoft Windows
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-2021-42990?: CVE-2021-42990 is a high-severity vulnerability in Flexihub, 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-2021-42990?: High severity. CVSS v3 base score is 8.8 out of 10.