Live › vulnerability › CVE-2023-20198
Go to dashboardCisco IOS XE's Web UI has a privilege escalation flaw that lets a remote attacker with no login create an account at privilege level 15. That account gives full control of the network device.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Cisco IOS XE Web UI | vendor | – | – |
| rockwellautomation allen-bradley stratix 5200 firmware | vendor | < 17.12.02 | 17.12.02 |
| rockwellautomation allen-bradley stratix 5800 firmware | vendor | < 17.12.02 | 17.12.02 |
| cisco ios xe | vendor | >= 16.12, < 16.12.10a | 16.12.10a |
| cisco ios xe | vendor | >= 17.3, < 17.3.8a | 17.3.8a |
| cisco ios xe | vendor | >= 17.6, < 17.6.6a | 17.6.6a |
| cisco ios xe | vendor | >= 17.9, < 17.9.4a | 17.9.4a |
Unknown from the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2023-20198")
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