CVE-2020-3465

Name: CVE-2020-3465
Creator: NVD / NIST
Published: 2020-09-24T18:15:19.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2020-3465 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a device to reload. The vulnerability is due to incorrect handling of certain valid, but not typical, Ethernet frames. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a device to reload. The vulnerability is due to incorrect handling of certain valid, but not typical, Ethernet frames. An attacker could exploit this vulnerability by sending the Ethernet frames onto the Ethernet segment. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.67%

47.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios Xe	16.6.9
Cisco	Ios Xe	17.4.1

References

Timeline

Published: Sep 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3465?

How severe is CVE-2020-3465?

CVE-2020-3465 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3465?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3465?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST