Authentication bypass using an alternate path or channel in Cisco Systems, Inc products - CVE-2021-40112
Published: November 4, 2021
Vulnerability identifier: #VU57960
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-40112
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Catalyst PON Switch CGP-ONT-1P
Catalyst PON Switch CGP-ONT-4P
Catalyst PON Switch CGP-ONT-4PV
Catalyst PON Switch CGP-ONT-4PVC
Catalyst PON Switch CGP-ONT-4TVCW
Catalyst PON Switch CGP-ONT-1P
Catalyst PON Switch CGP-ONT-4P
Catalyst PON Switch CGP-ONT-4PV
Catalyst PON Switch CGP-ONT-4PVC
Catalyst PON Switch CGP-ONT-4TVCW
Detailed vulnerability description
The vulnerability allows a remote attacker to modify the configuration of the device.
The vulnerability exists due to improper HTTPS input validation. A remote attacker can send a specially crafted HTTPS request to the web management interface and modify the configuration.
How to mitigate CVE-2021-40112
Install updates from vendor's website.