CVE-2023-20198
Cisco is providing an update for the ongoing investigation into
Description
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Affected Vendors & Products
| Vendor | Product | Version |
|---|---|---|
| rockwellautomation | allen-bradley_stratix_5200_firmware | to 17.12.02 (exc) |
| rockwellautomation | allen-bradley_stratix_5200 | * |
| rockwellautomation | allen-bradley_stratix_5800_firmware | to 17.12.02 (exc) |
| rockwellautomation | allen-bradley_stratix_5800 | * |
| cisco | ios_xe | From 16.12 (inc) to 16.12.10a (exc) |
| cisco | ios_xe | From 17.3 (inc) to 17.3.8a (exc) |
| cisco | ios_xe | From 17.6 (inc) to 17.6.6a (exc) |
| cisco | ios_xe | From 17.9 (inc) to 17.9.4a (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-420 | The product protects a primary channel, but it does not use the same level of protection for an alternate channel. |
| CWE-NVD-CWE-Other |
Attack-Flow Graph
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0/70
EPSS Chart
Meta Information
CVE Publication Date:
2023-10-16
CVE Last Modified Date:
2025-10-28
Report Generation Date:
2025-11-05
AI Powered Q&A Generation:
2025-11-05
EPSS Last Evaluated Date:
2025-08-20
NVD Report Link: