7.8
CVSSv2

CVE-2022-20678

Published: 15/04/2022 Updated: 07/11/2023
CVSS v2 Base Score: 7.8 | Impact Score: 6.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 695
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Summary

A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote malicious user to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the malicious user to cause the device to reload.

Vulnerability Trend

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cisco ios_xe 16.9.6

cisco ios_xe 16.12.4

cisco ios_xe 16.12.5

cisco ios_xe 17.3.3

Vendor Advisories

A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition This vulnerability is due to the incorrect handling of certain TCP segments An attacker could exploit this vulnerability by sending a stream of c ...