What is CVE-2021-34236?

CVE-2021-34236 is a critical-severity vulnerability in Netgear R8000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-09-08.

How severe is CVE-2021-34236?

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

Buffer overflow in Netgear R8000

CVE-2021-34236

Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter '…

Vulnerability class: Buffer Overflow

EPSS: 0.011 (62.9th 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

Netgear R8000
Netgear R8000_firmware — versions 1.0.4.56
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (x_refsource_MISC, Broken Link)
nvd@nist.gov (Third Party Advisory)

Frequently asked questions

What is CVE-2021-34236?: CVE-2021-34236 is a critical-severity vulnerability in Netgear R8000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-09-08.
How severe is CVE-2021-34236?: Critical severity. CVSS v3 base score is 9.8 out of 10.