Cisco · IOS XE Web UI
CVE-2023-20198
Cisco IOS XE Web UI Privilege Escalation Vulnerability
Cos'è
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.
CISA: 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.
Cosa fare
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.
Scadenza per le agenzie federali USA: 20 ottobre 2023
Altre falle sfruttate di Cisco
| Aggiunto | Vulnerabilità | Prodotto | Gravità | Probabilità di attacco |
|---|---|---|---|---|
| 14 ott 2026 | Relative Path Traversal | Secure Email Gateway | Critica 9,8 | 2,2% |
| 30 set 2026 | Hex Encoding | Catalyst SD-WAN Manager | Critica 9,8 | 39% |
| 16 set 2026 | Incorrect Use of Privileged APIs | Identity Services Engine | Critica 10,0 | 76% |
| 14 set 2026 | SQL Injection | Secure Email Gateway | Critica 9,8 | 30% |
| 9 set 2026 | Firewall Management Center Authentication Bypass Using an Alternate Path or Channel | Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management | Critica 10,0 | 88% |
| 11 ago 2026 | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) | Alta 8,6 | 1,0% |
| 29 lug 2026 | Secure Firewall Management Center Use of Hard-coded Password | Secure Firewall Management Center (FMC) | Media 5,3 | 35% |
| 13 lug 2026 | Cross-Site Request Forgery | IOS | Alta 8,1 | 34% |
Fonti: Known Exploited Vulnerabilities (CISA, pubblico dominio), CVE records (cve.org) e EPSS (FIRST). La probabilità di attacco è la stima EPSS che qualcuno provi a sfruttare la falla nei prossimi 30 giorni.