Executive Summary

Name CVE-2020-3230 First vendor Publication 2020-06-03
Vendor Cve Last vendor Modification 2021-09-17

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent IKEv2 from establishing new security associations. The vulnerability is due to incorrect handling of crafted IKEv2 SA-Init packets. An attacker could exploit this vulnerability by sending crafted IKEv2 SA-Init packets to the affected device. An exploit could allow the attacker to cause the affected device to reach the maximum incoming negotiation limits and prevent further IKEv2 security associations from being formed.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3230

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

Os 528
Os 264

Snort® IPS/IDS

Date Description
2020-12-05 Cisco IOS IKE2 invalid port denial of service attempt
RuleID : 54160 - Revision : 1 - Type : SERVER-OTHER
2020-12-05 Cisco IOS IKE2 invalid port denial of service attempt
RuleID : 54159 - Revision : 1 - Type : SERVER-OTHER

Sources (Detail)

Source Url
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

Alert History

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Date Informations
2021-09-18 00:23:18
  • Multiple Updates
2021-05-04 13:51:42
  • Multiple Updates
2021-04-22 03:03:02
  • Multiple Updates
2020-12-05 21:23:47
  • Multiple Updates
2020-06-10 00:22:53
  • Multiple Updates
2020-06-04 00:22:52
  • First insertion