The TrustZone implementation in certain Broadcom MediaxChange firmware could allow an unauthenticated, physically proximate attacker to achieve arbitrary code execution in the TrustZone Trusted Execution Environment (TEE) of an affected device. This, for example, affects certain Cisco IP Phone and Wireless IP Phone products before 2021-07-07. Exploitation is possible only when the attacker can disassemble the device in order to control the voltage/current for chip pins.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.8, with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 15 products from cisco, from cisco, from cisco and 12 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2021-07-22T17:15:09.510
2024-11-21T06:08:54.437
Modified
CVSSv3.1: 6.8 (MEDIUM)
AV:L/AC:L/Au:N/C:P/I:P/A:P
3.9
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ip_phone_8800_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8800_series_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8811_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8811_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8841_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8841_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8845_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8845_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8851_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8851_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8861_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8861_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | ip_phone_8865_firmware | < 14.0\(1\) | Yes |
| Operating System | cisco | ip_phone_8865_with_multiplatform_firmware | < 11.3\(4\) | Yes |
| Operating System | cisco | wireless_ip_phone_8821_firmware | < 11.0\(6\)sr1 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.