Vulnerability identifier: #VU57121

Vulnerability risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-34710

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ATA 190 Series Analog Telephone Adapters
Other software / Other software solutions
ATA 191 Analog Telephone Adapter
Hardware solutions / Routers & switches, VoIP, GSM, etc
ATA 192 Multiplatform Analog Telephone Adapter
Hardware solutions / Routers & switches, VoIP, GSM, etc
ATA 191 Multiplatform Analog Telephone Adapter
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote authenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ATA 190 Series Analog Telephone Adapters: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-A4J57F3

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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