CVE-2020-3527
HIGHCisco IOS XE 16.9.0-16.9.4 - Unauthenticated Denial of Service via Oversized Frames
Title source: llmDescription
A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device. The vulnerability is due to insufficient packet size validation. An attacker could exploit this vulnerability by sending jumbo frames or frames larger than the configured MTU size to the management interface of this device. A successful exploit could allow the attacker to crash the device fully before an automatic recovery.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-JP-DOS-g5FfGm8y
Scores
CVSS v3
8.6
EPSS
0.0068
EPSS Percentile
71.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
CWE-20
Status
published
Products (1)
cisco/ios_xe
16.9.0 - 16.9.5
Published
Sep 24, 2020
Tracked Since
Feb 18, 2026