SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2024-20534

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 6800, 7800, and 8800 Series, and Cisco Video Phone 8875 with Cisco Multiplatform Firmware could allow an authenticated, remote attacker to conduct stored cross-site scripting…

MEDIUM 4.8EPSS 0.28%

Does this matter?

Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.

Description

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 6800, 7800, and 8800 Series, and Cisco Video Phone 8875 with Cisco Multiplatform Firmware could allow an authenticated, remote attacker to conduct stored cross-site scripting (XSS) attacks against users. This vulnerability exists because the web UI of an affected device does not properly validate user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. Note: To exploit this vulnerability, Web Access must be enabled on the phone and the attacker must have Admin credentials on the device. Web Access is disabled by default.

CVSS 3.1
4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS
0.28% probability · 20th percentile
CISA KEV
Not listed
Weakness
CWE-79
Affected
cisco/desk phone 9841 with multiplatform firmware · cisco/desk phone 9851 with multiplatform firmware · cisco/desk phone 9861 with multiplatform firmware · cisco/desk phone 9871 with multiplatform firmware · cisco/ip phone 6821 with multiplatform firmware · cisco/ip phone 6841 with multiplatform firmware · cisco/ip phone 6851 with multiplatform firmware · cisco/ip phone 6861 with multiplatform firmware · cisco/ip phone 6871 with multiplatform firmware · cisco/ip phone 7811 with multiplatform firmware · cisco/ip phone 7821 with multiplatform firmware · cisco/ip phone 7832 with multiplatform firmware · cisco/ip phone 7841 with multiplatform firmware · cisco/ip phone 7861 with multiplatform firmware · cisco/ip phone 8811 with multiplatform firmware · cisco/ip phone 8832 with multiplatform firmware · cisco/ip phone 8841 with multiplatform firmware · cisco/ip phone 8845 with multiplatform firmware · cisco/ip phone 8851 with multiplatform firmware · cisco/ip phone 8861 with multiplatform firmware · +3 more
Source
psirt@cisco.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.