CVE-2021-34735 Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities

High 8.8 Published 6 Oct 2021 Updated 7 Nov 2024

Attackers can execute arbitrary commands or cause denial of service on Cisco ATA 190 Series devices via command injection vulnerabilities.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-34735?

CVE-2021-34735 is a high-severity command injection vulnerability in Cisco Analog Telephone Adaptor (ATA) Software, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Multiple vulnerabilities in the Cisco ATA 190 Series Analog Telephone Adapter Software could allow an attacker to perform a command injection attack resulting in remote code execution or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness: CWE-770

Which versions are affected by CVE-2021-34735?

It affects 3 products.

Products include Cisco Ata 190 Firmware, Cisco Ata 191 Firmware, Cisco Ata 192 Firmware.

How do I fix CVE-2021-34735?

No fix has been published for CVE-2021-34735 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-34735 being exploited?

There is no known exploitation of CVE-2021-34735 in the wild and no public exploit code.

Sources

Also known as GHSA-vwqh-mhgj-p4m8.