CVE-2024-20357

Published May 1, 2024 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco IP Phones with Multiplatform Firmware

affected

Version	Status	Constraints
`11.3.1 MSR2-6`	affected	—
`11.3.1 MSR3-3`	affected	—
`11.3.2`	affected	—
`11.3.3`	affected	—
`11.3.1 MSR4-1`	affected	—
`11.3.4`	affected	—
`11.3.5`	affected	—
`11.3.3 MSR2`	affected	—
`11.3.3 MSR1`	affected	—
`11.3.6`	affected	—
`11-3-1MPPSR4UPG`	affected	—
`11.3.7`	affected	—
`11-3-1MSR2UPG`	affected	—
`11.3.6SR1`	affected	—
`11.3.7SR1`	affected	—
`11.3.7SR2`	affected	—
`11.0.0`	affected	—
`11.0.1`	affected	—
`11.0.1 MSR1-1`	affected	—
`11.0.2`	affected	—
`11.1.1`	affected	—
`11.1.1 MSR1-1`	affected	—
`11.1.1 MSR2-1`	affected	—
`11.1.2`	affected	—
`11.1.2 MSR1-1`	affected	—
`11.1.2 MSR3-1`	affected	—
`11.2.1`	affected	—
`11.2.2`	affected	—
`11.2.3`	affected	—
`11.2.3 MSR1-1`	affected	—
`11.2.4`	affected	—
`11.3.1`	affected	—
`11.3.1 MSR1-3`	affected	—
`4.5`	affected	—
`4.6 MSR1`	affected	—
`4.7.1`	affected	—
`4.8.1`	affected	—
`4.8.1 SR1`	affected	—
`5.0.1`	affected	—
`12.0.1`	affected	—
`12.0.2`	affected	—
`12.0.3`	affected	—
`12.0.3SR1`	affected	—
`12.0.4`	affected	—
`5.1.1`	affected	—
`5.1.2`	affected	—
`5.1(2)SR1`	affected	—

Cisco

Cisco PhoneOS

affected

Version	Status	Constraints
`1.0.1`	affected	—
`2.1.1`	affected	—
`2.0.1`	affected	—
`2.3.1`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_6871:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:*

Configuration 4 [-]

AND

cpe:2.3:o:cisco:ip_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_7832:-:*:*:*:*:*:*:*

Configuration 5 [-]

AND

cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:*

Configuration 6 [-]

AND

cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:*

Configuration 7 [-]

AND

cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:*

Configuration 8 [-]

AND

cpe:2.3:o:cisco:ip_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8832:-:*:*:*:*:*:*:*

Configuration 9 [-]

AND

cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:*

Configuration 10 [-]

AND

cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:*

Configuration 11 [-]

AND

cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:*

Configuration 12 [-]

AND

cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:*

Configuration 13 [-]

AND

cpe:2.3:o:cisco:ip_phone_8865_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:*

Configuration 14 [-]

AND

cpe:2.3:o:cisco:video_phone_8875_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:video_phone_8875:-:*:*:*:*:*:*:*

Configuration 15 [-]

AND

cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_6821:-:*:*:*:*:*:*:*

Configuration 16 [-]

AND

cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_6841:-:*:*:*:*:*:*:*

Configuration 17 [-]

AND

cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_6851:-:*:*:*:*:*:*:*

Configuration 18 [-]

AND

cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ip_phone_6861:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2024-18072	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

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.499% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-multi-vulns-cXAhCvS

History

Jan 5, 2026 3:00 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco ip Phone 6821 Cisco ip Phone 6821 With Multiplatform Firmware Cisco ip Phone 6841 Cisco ip Phone 6841 With Multiplatform Firmware Cisco ip Phone 6851 Cisco ip Phone 6851 With Multiplatform Firmware Cisco ip Phone 6861 Cisco ip Phone 6861 With Multiplatform Firmware Cisco ip Phone 6871 Cisco ip Phone 6871 With Multiplatform Firmware Cisco ip Phone 7811 Cisco ip Phone 7811 With Multiplatform Firmware Cisco ip Phone 7821 Cisco ip Phone 7821 With Multiplatform Firmware Cisco ip Phone 7832 Cisco ip Phone 7832 With Multiplatform Firmware Cisco ip Phone 7841 Cisco ip Phone 7841 With Multiplatform Firmware Cisco ip Phone 7861 Cisco ip Phone 7861 With Multiplatform Firmware Cisco ip Phone 8811 Cisco ip Phone 8811 With Multiplatform Firmware Cisco ip Phone 8832 Cisco ip Phone 8832 With Multiplatform Firmware Cisco ip Phone 8841 Cisco ip Phone 8841 With Multiplatform Firmware Cisco ip Phone 8845 Cisco ip Phone 8845 With Multiplatform Firmware Cisco ip Phone 8851 Cisco ip Phone 8851 With Multiplatform Firmware Cisco ip Phone 8861 Cisco ip Phone 8861 With Multiplatform Firmware Cisco ip Phone 8865 Cisco ip Phone 8865 With Multiplatform Firmware Cisco video Phone 8875 Cisco video Phone 8875 Firmware
CPEs		cpe:2.3:h:cisco:ip_phone_6821:-:::::::* cpe:2.3:h:cisco:ip_phone_6841:-:::::::* cpe:2.3:h:cisco:ip_phone_6851:-:::::::* cpe:2.3:h:cisco:ip_phone_6861:-:::::::* cpe:2.3:h:cisco:ip_phone_6871:-:::::::* cpe:2.3:h:cisco:ip_phone_7811:-:::::::* cpe:2.3:h:cisco:ip_phone_7821:-:::::::* cpe:2.3:h:cisco:ip_phone_7832:-:::::::* cpe:2.3:h:cisco:ip_phone_7841:-:::::::* cpe:2.3:h:cisco:ip_phone_7861:-:::::::* cpe:2.3:h:cisco:ip_phone_8811:-:::::::* cpe:2.3:h:cisco:ip_phone_8832:-:::::::* cpe:2.3:h:cisco:ip_phone_8841:-:::::::* cpe:2.3:h:cisco:ip_phone_8845:-:::::::* cpe:2.3:h:cisco:ip_phone_8851:-:::::::* cpe:2.3:h:cisco:ip_phone_8861:-:::::::* cpe:2.3:h:cisco:ip_phone_8865:-:::::::* cpe:2.3:h:cisco:video_phone_8875:-:::::::* cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7832_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8832_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8865_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:video_phone_8875_firmware::::::::
Vendors & Products		Cisco Cisco ip Phone 6821 Cisco ip Phone 6821 With Multiplatform Firmware Cisco ip Phone 6841 Cisco ip Phone 6841 With Multiplatform Firmware Cisco ip Phone 6851 Cisco ip Phone 6851 With Multiplatform Firmware Cisco ip Phone 6861 Cisco ip Phone 6861 With Multiplatform Firmware Cisco ip Phone 6871 Cisco ip Phone 6871 With Multiplatform Firmware Cisco ip Phone 7811 Cisco ip Phone 7811 With Multiplatform Firmware Cisco ip Phone 7821 Cisco ip Phone 7821 With Multiplatform Firmware Cisco ip Phone 7832 Cisco ip Phone 7832 With Multiplatform Firmware Cisco ip Phone 7841 Cisco ip Phone 7841 With Multiplatform Firmware Cisco ip Phone 7861 Cisco ip Phone 7861 With Multiplatform Firmware Cisco ip Phone 8811 Cisco ip Phone 8811 With Multiplatform Firmware Cisco ip Phone 8832 Cisco ip Phone 8832 With Multiplatform Firmware Cisco ip Phone 8841 Cisco ip Phone 8841 With Multiplatform Firmware Cisco ip Phone 8845 Cisco ip Phone 8845 With Multiplatform Firmware Cisco ip Phone 8851 Cisco ip Phone 8851 With Multiplatform Firmware Cisco ip Phone 8861 Cisco ip Phone 8861 With Multiplatform Firmware Cisco ip Phone 8865 Cisco ip Phone 8865 With Multiplatform Firmware Cisco video Phone 8875 Cisco video Phone 8875 Firmware

Subscriptions

Cisco Ip Phone 6821 Ip Phone 6821 With Multiplatform Firmware Ip Phone 6841 Ip Phone 6841 With Multiplatform Firmware Ip Phone 6851 Ip Phone 6851 With Multiplatform Firmware Ip Phone 6861 Ip Phone 6861 With Multiplatform Firmware Ip Phone 6871 Ip Phone 6871 With Multiplatform Firmware Ip Phone 7811 Ip Phone 7811 With Multiplatform Firmware Ip Phone 7821 Ip Phone 7821 With Multiplatform Firmware Ip Phone 7832 Ip Phone 7832 With Multiplatform Firmware Ip Phone 7841 Ip Phone 7841 With Multiplatform Firmware Ip Phone 7861 Ip Phone 7861 With Multiplatform Firmware Ip Phone 8811 Ip Phone 8811 With Multiplatform Firmware Ip Phone 8832 Ip Phone 8832 With Multiplatform Firmware Ip Phone 8841 Ip Phone 8841 With Multiplatform Firmware Ip Phone 8845 Ip Phone 8845 With Multiplatform Firmware Ip Phone 8851 Ip Phone 8851 With Multiplatform Firmware Ip Phone 8861 Ip Phone 8861 With Multiplatform Firmware Ip Phone 8865 Ip Phone 8865 With Multiplatform Firmware Video Phone 8875 Video Phone 8875 Firmware

Weaknesses