CVE-2020-3228

HIGH

Cisco IOS - Unauthenticated Denial of Service via Crafted SXP Packets

Title source: llm
STIX 2.1

Description

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

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