What is CVE-2021-43573?

CVE-2021-43573 is a critical-severity vulnerability in Realtek Rtl8195am, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-11-11.

How severe is CVE-2021-43573?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Realtek Rtl8195am

CVE-2021-43573

A buffer overflow was discovered on Realtek RTL8195AM devices before 2.0.10. It exists in the client code when processing a malformed IE length of HT capability information in the Beacon and Association response frame.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (61.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

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

References

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

Frequently asked questions

What is CVE-2021-43573?: CVE-2021-43573 is a critical-severity vulnerability in Realtek Rtl8195am, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-11-11.
How severe is CVE-2021-43573?: Critical severity. CVSS v3 base score is 9.8 out of 10.