CVE-2021-34735 : What You Need to Know

Cisco ATA 190 Series Analog Telephone Adapter Software has multiple vulnerabilities that could result in remote code execution or denial of service attacks. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-34735

This CVE refers to multiple vulnerabilities in the Cisco ATA 190 Series Analog Telephone Adapter Software.

What is CVE-2021-34735?

Vulnerabilities in Cisco ATA 190 Series Analog Telephone Adapter Software could allow a remote attacker to execute commands leading to remote code execution or trigger a denial of service on affected devices.

The Impact of CVE-2021-34735

The impact of these vulnerabilities is rated as HIGH, with a CVSS base score of 8.8. Attackers could exploit these vulnerabilities to compromise confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-34735

Below are specific technical details related to CVE-2021-34735.

Vulnerability Description

The vulnerabilities allow for command injection attacks resulting in remote code execution and potential denial of service conditions on affected devices.

Affected Systems and Versions

The Cisco Analog Telephone Adaptor (ATA) Software from Cisco is affected by these vulnerabilities. The specific affected version details are not available.

Exploitation Mechanism

Attackers can exploit these vulnerabilities over a network with low complexity and low privileges required, making them particularly dangerous.

Mitigation and Prevention

To address CVE-2021-34735, consider the following mitigation strategies.

Immediate Steps to Take

Apply vendor-provided patches promptly to fix the vulnerabilities in the software.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Regularly update and patch all software and firmware to mitigate potential vulnerabilities.
Implement strong network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Refer to the Cisco Security Advisory for CVE-2021-34735 for specific patch details and update instructions.