CVE-2020-3228
HIGHCisco IOS - Unauthenticated Denial of Service via Crafted SXP Packets
Title source: llmDescription
A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
References (1)
Core 1
Core References
Patch, Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sxp-68TEVzR
Scores
CVSS v3
8.6
EPSS
0.0164
EPSS Percentile
82.2%
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
no
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (50)
cisco/ios
12.2\(6\)i1
cisco/ios
15.1\(1\)sy
cisco/ios
15.1\(1\)sy1
cisco/ios
15.1\(1\)sy2
cisco/ios
15.1\(1\)sy3
cisco/ios
15.1\(1\)sy4
cisco/ios
15.1\(1\)sy5
cisco/ios
15.1\(1\)sy6
cisco/ios
15.1\(2\)sy
cisco/ios
15.1\(2\)sy1
... and 40 more
Published
Jun 03, 2020
Tracked Since
Feb 18, 2026