What is CVE-2020-3487?

CVE-2020-3487 is a medium-severity vulnerability in Cisco Catalyst 9115 Ap, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2020-09-24.

How severe is CVE-2020-3487?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Cisco Catalyst 9115 Ap

CVE-2020-3487

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)

Published 2020-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.8th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-d… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3487?: CVE-2020-3487 is a medium-severity vulnerability in Cisco Catalyst 9115 Ap, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2020-09-24.
How severe is CVE-2020-3487?: Medium severity. CVSS v3 base score is 6.5 out of 10.