CVE-2024-20534: cisco cisco ip phones with multiplatform firmware Cross-site Scripting
Vulnerability summary
CVE-2024-20534 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in cisco cisco ip phones with multiplatform firmware. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.7% of scored vulnerabilities.
Timeline
- 06-11-2024PublishedVulnerability first disclosed.
- 06-11-2024Last modifiedVulnerability information updated.
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 metrics
2 scores · 2 sources · 1 version- NVDNIST4.8MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
+0.02 pp
From 0.28% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco25 products
- cisco ip phones with multiplatform firmware11.1.2 | 11.2.1 | 11.2.3 | 11.2.2 | 11.2.3 MSR1-1 | 11.1.2 MSR1-1 | 11.1.1 | 11.1.2 MSR3-1 | 11.0.0 | 11.1.1 MSR1-1 | 11.0.1 | 11.1.1 MSR2-1 | 11.2.4 | 11.0.1 MSR1-1 | 11.0.2 | 11.3.1 | 11.3.1 MSR1-3 | 11.3.2 | 11.3.1 MSR2-6 | 11-3-1MSR2UPG | 4.7.1 | 4.6 MSR1 | 11.3.1 MSR3-3 | 4.8.1 | 11.3.3 | 11.3.1 MSR4-1 | 11.3.4 | 4.8.1 SR1 | 11.3.5 | 11.3.3 MSR1 | 5.0.1 | 11.3.3 MSR2 | 11.3.6 | 11-3-1MPPSR4UPG | 11.3.6SR1 | 11.3.7 | 5.1.1 | 11.3.7SR1 | 12.0.1 | 12.0.2 | 11.3.7SR2 | 12.0.3 | 12.0.3SR1 | 12.0.4 | 12.0.4SR1 | 12.0.5 | 12.0.5SR1 | 12.0.3SR2
- cisco session initiation protocol (sip) software3.1(1) | 3.0(1) | 3.1(1)SR1
- desk_phone_9841_with_multiplatform_firmware3.1\(1\) | 3.1\(1\):sr1
- desk_phone_9851_with_multiplatform_firmware3.1\(1\) | 3.1\(1\):sr1
- desk_phone_9861_with_multiplatform_firmware3.1\(1\) | 3.1\(1\):sr1
1 vendor · 25 products