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.
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Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.
No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| cisco | ip_phone_8800_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8800_series_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8811_firmware |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
15
Affected Products
2
References
cisco / ip_phone_8800_firmware
| 14.0\(1\) |
| - |
| cisco | ip_phone_8811_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8841_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8841_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8845_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8845_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8851_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8851_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8861_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8861_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | ip_phone_8865_firmware | 14.0\(1\) | - |
| cisco | ip_phone_8865_with_multiplatform_firmware | 11.3\(4\) | - |
| cisco | wireless_ip_phone_8821_firmware | 11.0\(6\)sr1 | - |
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability
Impact