What is CVE-2021-45524?

CVE-2021-45524 is a high-severity vulnerability in NETGEAR R8000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.6/10. Published 2021-12-26.

How severe is CVE-2021-45524?

High severity. CVSS v3 base score is 7.6 out of 10.

Buffer overflow in NETGEAR R8000

CVE-2021-45524

NETGEAR R8000 devices before 1.0.4.62 are affected by a buffer overflow by an authenticated user.

Vulnerability class: Buffer Overflow

Published 2021-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

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

References

kb.netgear.com/000064123/Security-Advisory-for-Post-Authentication-Buffer-Overf… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-45524?: CVE-2021-45524 is a high-severity vulnerability in NETGEAR R8000, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.6/10. Published 2021-12-26.
How severe is CVE-2021-45524?: High severity. CVSS v3 base score is 7.6 out of 10.