What is CVE-2022-21217?

CVE-2022-21217 is a critical-severity vulnerability in Reolink Rlc-410w, classified under CWE-457. CVSS score: 9.8/10. Published 2022-01-28.

How severe is CVE-2022-21217?

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

Buffer overflow in Reolink Rlc-410w

CVE-2022-21217

An out-of-bounds write vulnerability exists in the device TestEmail functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-crafted network request can lead to an out-of-bounds write. An attacker can send an HTTP request to trigger this vulnerability.

Published 2022-01-28 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% 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

Reolink Rlc-410w
Reolink Rlc-410w Firmware — versions 3.0.0.136_20121102

Weakness classification (CWE)

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1445 (Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2022-21217?: CVE-2022-21217 is a critical-severity vulnerability in Reolink Rlc-410w, classified under CWE-457. CVSS score: 9.8/10. Published 2022-01-28.
How severe is CVE-2022-21217?: Critical severity. CVSS v3 base score is 9.8 out of 10.