Is CVE-2022-20682 actively exploited?

No active exploitation of CVE-2022-20682 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-20682 be exploited remotely?

Yes. CVE-2022-20682 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-20682?

CVE-2022-20682 has a CVSS score of 8.6 (HIGH).

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HIGH

CVE-2022-20682

CWE-690Published: April 15, 2022· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to inadequate input validation of incoming CAPWAP packets encapsulating multicast DNS (mDNS) queries. An attacker could exploit this vulnerability by connecting to a wireless network and sending a crafted mDNS query, which would flow through and be processed by the wireless controller. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

NVD Source

Technical Analysis

CVE-2022-20682 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 availability disruption (denial of service), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.