What is CVE-2022-21742?

CVE-2022-21742 is a medium-severity vulnerability in Realtek Rtl8152b, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2022-06-20.

How severe is CVE-2022-21742?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Realtek Rtl8152b

CVE-2022-21742

Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (15.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

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

References

twcert@cert.org.tw (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-21742?: CVE-2022-21742 is a medium-severity vulnerability in Realtek Rtl8152b, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2022-06-20.
How severe is CVE-2022-21742?: Medium severity. CVSS v3 base score is 6.2 out of 10.