Executive Summary

Name CVE-2023-20198 First vendor Publication 2023-10-16
Vendor Cve Last vendor Modification 2024-01-25

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Overall CVSS Score 10
Base Score 10 Environmental Score 10
impact SubScore 6 Temporal Score 10
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores


Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determined that the actors exploited two previously unknown issues. The attacker first exploited CVE-2023-20198 to gain initial access and issued a privilege 15 command to create a local user and password combination. This allowed the user to log in with normal user access. The attacker then exploited another component of the web UI feature, leveraging the new local user to elevate privilege to root and write the implant to the file system. Cisco has assigned CVE-2023-20273 to this issue. CVE-2023-20198 has been assigned a CVSS Score of 10.0. CVE-2023-20273 has been assigned a CVSS Score of 7.2. Both of these CVEs are being tracked by CSCwh87343.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20198

CPE : Common Platform Enumeration

Application 13
Os 1042

Sources (Detail)

Source Url
MISC https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory...

Alert History

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Date Informations
2024-02-01 21:28:14
  • Multiple Updates
2024-02-01 17:26:55
  • Multiple Updates
2024-02-01 13:27:57
  • Multiple Updates
2024-02-01 12:29:01
  • Multiple Updates
2024-01-25 21:27:49
  • Multiple Updates
2023-11-16 00:27:59
  • Multiple Updates
2023-11-14 09:28:05
  • Multiple Updates
2023-11-08 00:27:53
  • Multiple Updates
2023-10-26 00:27:33
  • Multiple Updates
2023-10-24 21:27:27
  • Multiple Updates
2023-10-17 05:27:20
  • Multiple Updates
2023-10-17 00:27:21
  • Multiple Updates
2023-10-16 21:27:22
  • First insertion