CVE-2020-3111
8.8 · HIGHOverview
CVE-2020-3111 is a high-severity vulnerability affecting cisco ip_conference_phone_7832_firmware. It was published on February 5, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Remediation
Check the references section for vendor advisories and patches from cisco. Update ip_conference_phone_7832_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | ip_conference_phone_7832_firmware | >= 0, < 12.7\(1\) | Affected |
| cisco | ip_conference_phone_7832_with_multiplatform_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_conference_phone_8832_firmware | >= 0, < 12.7\(1\) | Affected |
| cisco | ip_conference_phone_8832_with_multiplatform_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_6821_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_6841_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_6851_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_6861_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_6871_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_7811_firmware | >= 0, < 12.7\(1\) | Affected |
| cisco | ip_phone_7811_with_multiplatform_firmware | >= 0, < 11.3\(1\)sr1 | Affected |
| cisco | ip_phone_7821_firmware | >= 0, < 12.7\(1\) | Affected |
References
Frequently Asked Questions
What is CVE-2020-3111?
CVE-2020-3111 is a high-severity vulnerability affecting cisco ip_conference_phone_7832_firmware. It was published on February 5, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2020-3111?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-3111?
Check the references section for vendor advisories and patches from cisco. Update ip_conference_phone_7832_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-3111?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-3111 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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