CVE-2024-20376

Name: CVE-2024-20376
Creator: NVD / NIST
Published: 2024-05-01T17:15:28.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2024-20376 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a DoS condition. This vulnerability is due to insufficient validation of user-supplied input. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a DoS condition. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the affected device to reload.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.87%

54.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Cisco	Video Phone 8875 Firmware	< 2.3.1.0101
Cisco	Ip Phone 6821 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 6861 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 6871 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 7811 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 7821 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 7832 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 7841 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 7861 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8811 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8832 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8841 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8845 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8851 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8861 With Multiplatform Firmware	<= 12.0.4
Cisco	Ip Phone 8865 With Multiplatform Firmware	<= 12.0.4

References

Timeline

Published: May 1, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-20376?

How severe is CVE-2024-20376?

CVE-2024-20376 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2024-20376?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20376?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST