CVE-2024-20357

Name: CVE-2024-20357
Creator: NVD / NIST
Published: 2024-05-01T17:15:28.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2024-20357 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A vulnerability in the XML service of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to initiate phone calls on an affected device. This vulnerability exists because bounds-checking does not occur while parsing XML requests. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

A vulnerability in the XML service of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to initiate phone calls on an affected device. This vulnerability exists because bounds-checking does not occur while parsing XML requests. An attacker could exploit this vulnerability by sending a crafted XML request to an affected device. A successful exploit could allow the attacker to initiate calls or play sounds on the device.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

0.49%

38.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
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
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

References

Timeline

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

Frequently Asked Questions

What is CVE-2024-20357?

How severe is CVE-2024-20357?

CVE-2024-20357 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2024-20357?

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-2024-20357?

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

Scan your code now

Source: NVD / NIST