October 16, 2023 · Applied Cybernetics Group
CVE-2023-20198 — Cisco IOS XE Web UI
Cisco IOS XE Web UI Privilege Escalation Vulnerability
- Added to KEV
2023-10-16- Federal due date
2023-10-20- Vendor
- Cisco
- Product
- IOS XE Web UI
- EPSS
- 99.9th percentile (score 0.940, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2023-20198
CISA short description
Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device.
Required action
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.