CVE-2024-20378

Published May 1, 2024 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

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.

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

OR	cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 2 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 3 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 4 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 5 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 6 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 7 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 8 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 9 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 10 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 11 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 12 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 13 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware:12.0.4:-::::::

cpe:2.3:h:cisco:ip_phone_8851nr:-:*:*:*:*:*:*:*

Configuration 14 [-]

AND

OR	cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware::::::::
	cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:12.0.4:-::::::

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

Configuration 15 [-]

AND

cpe:2.3:o:cisco:video_phone_8875_with_multiplatform_firmware:*:*:*:*:*:*:*:*

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2024-18093	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

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% (0.810% 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 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 8841 Cisco ip Phone 8841 With Multiplatform Firmware Cisco ip Phone 8851 Cisco ip Phone 8851 With Multiplatform Firmware Cisco ip Phone 8851nr Cisco ip Phone 8851nr With Multiplatform Firmware Cisco ip Phone 8861 Cisco ip Phone 8861 With Multiplatform Firmware Cisco video Phone 8875 Cisco video Phone 8875 With Multiplatform 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_7841:-:::::::* cpe:2.3:h:cisco:ip_phone_7861:-:::::::* cpe:2.3:h:cisco:ip_phone_8811:-:::::::* cpe:2.3:h:cisco:ip_phone_8841:-:::::::* cpe:2.3:h:cisco:ip_phone_8851:-:::::::* cpe:2.3:h:cisco:ip_phone_8851nr:-:::::::* cpe:2.3:h:cisco:ip_phone_8861:-:::::::* 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_6821_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:::::::: cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:12.0.4:-:::::: cpe:2.3:o:cisco:video_phone_8875_with_multiplatform_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 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 8841 Cisco ip Phone 8841 With Multiplatform Firmware Cisco ip Phone 8851 Cisco ip Phone 8851 With Multiplatform Firmware Cisco ip Phone 8851nr Cisco ip Phone 8851nr With Multiplatform Firmware Cisco ip Phone 8861 Cisco ip Phone 8861 With Multiplatform Firmware Cisco video Phone 8875 Cisco video Phone 8875 With Multiplatform 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 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 8841 Ip Phone 8841 With Multiplatform Firmware Ip Phone 8851 Ip Phone 8851 With Multiplatform Firmware Ip Phone 8851nr Ip Phone 8851nr With Multiplatform Firmware Ip Phone 8861 Ip Phone 8861 With Multiplatform Firmware Video Phone 8875 Video Phone 8875 With Multiplatform Firmware

Weaknesses