What is CVE-2020-3489?

CVE-2020-3489 is a high-severity vulnerability in Cisco Catalyst 9800-40, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2020-09-24.

How severe is CVE-2020-3489?

High severity. CVSS v3 base score is 7.4 out of 10.

Improper input validation in Cisco Catalyst 9800-40

CVE-2020-3489

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition on the affected device.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (40.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3489?: CVE-2020-3489 is a high-severity vulnerability in Cisco Catalyst 9800-40, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2020-09-24.
How severe is CVE-2020-3489?: High severity. CVSS v3 base score is 7.4 out of 10.