Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2024-20378

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to retrieve sensitive information from an affected device.

This vulnerability is due to a lack of authentication for specific endpoints of the web-based management interface on an affected device. An attacker could exploit this vulnerability by connecting to the affected device. A successful exploit could allow the attacker to gain unauthorized access to the device, enabling the recording of user credentials and traffic to and from the affected device, including VoIP calls that could be replayed.

  • Published: May 1, 2024
  • Updated: Nov 16, 2025
  • CVE: CVE-2024-20378
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWEs:

Software From Fixed in
cisco / ip_phone_6821_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_6821_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_6841_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_6841_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_6851_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_6851_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_6861_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_6861_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_6871_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_6871_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_7811_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_7811_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_7821_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_7821_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_7841_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_7841_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_7861_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_7861_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_8811_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_8811_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_8841_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_8841_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_8851_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_8851_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_8851nr_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_8851nr_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / ip_phone_8861_with_multiplatform_firmware - 12.0.4
cisco / ip_phone_8861_with_multiplatform_firmware 12.0.4 12.0.4.x
cisco / video_phone_8875_with_multiplatform_firmware - 2.3.1.0101

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.