CVE-2024-20378

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

0.8% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2024-05-01 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 07:06 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.8% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2024-05-01 17:15 UTC

Last modified

2026-06-17 07:06 UTC

Exploit probability

0.8% · EPSS, next 30 days

Weakness

CWE-305

Record status

Analyzed

Affected

• Cisco Ip Phone 6821 With Multiplatform Firmware < 12.0.4
• Cisco Ip Phone 6821 With Multiplatform Firmware 12.0.4
• Cisco Ip Phone 6841 With Multiplatform Firmware < 12.0.4
• Cisco Ip Phone 6841 With Multiplatform Firmware 12.0.4
• Cisco Ip Phone 6851 With Multiplatform Firmware < 12.0.4
• Cisco Ip Phone 6851 With Multiplatform Firmware 12.0.4
• Cisco Ip Phone 6861 With Multiplatform Firmware < 12.0.4
• Cisco Ip Phone 6861 With Multiplatform Firmware 12.0.4

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2024-20378.md and follow it. Check whether this project is affected by CVE-2024-20378. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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