Vulnerability identifier: #VU57959

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34795

CWE-ID: CWE-798

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Catalyst PON Switch CGP-ONT-1P
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst PON Switch CGP-ONT-4P
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst PON Switch CGP-ONT-4PV
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst PON Switch CGP-ONT-4PVC
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst PON Switch CGP-ONT-4TVCW
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor:

Description

The vulnerability allows a remote attacker to gain full access to vulnerable system.

The vulnerability exists due to an unintentional debugging credential that exists on the device. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGr

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.