Is CVE-2022-21217 actively exploited?

No active exploitation of CVE-2022-21217 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-21217 be exploited remotely?

Yes. CVE-2022-21217 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-21217?

CVE-2022-21217 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2022-21217

CRITICAL

CVE-2022-21217

CWE-457Published: January 28, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2022-21217 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.