CVE-2024-20488 | Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. 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.

Published: 2024-08-21 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-20488 is rated Low Risk (33.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.35%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-20488

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.40% 0.35% -0.05%
2 2026-03-28 0.52% 0.40% -0.12%
3 2026-01-10 — 0.52% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20488

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]

Weakness enumeration for CVE-2024-20488

Affected software / configurations for CVE-2024-20488

Vendor Product Version Raw CPE
cisco unified_communications_manager 12.5\(1\) cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su1 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su1:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su2 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su2:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su3 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su3:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su4 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su4:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su5 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su5:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su6 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su6:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su7 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su7a cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su7a:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su8 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su8a cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su8a:*:*:*:*:*:*:*
cisco unified_communications_manager 12.5\(1\)su9 cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)su9:*:*:*:*:*:*:*
cisco unified_communications_manager 12.6\(1\) cpe:2.3:a:cisco:unified_communications_manager:12.6\(1\):*:*:*:*:*:*:*
cisco unified_communications_manager 14.0 cpe:2.3:a:cisco:unified_communications_manager:14.0:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su1 cpe:2.3:a:cisco:unified_communications_manager:14.0su1:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su2 cpe:2.3:a:cisco:unified_communications_manager:14.0su2:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su2a cpe:2.3:a:cisco:unified_communications_manager:14.0su2a:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su3 cpe:2.3:a:cisco:unified_communications_manager:14.0su3:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su4 cpe:2.3:a:cisco:unified_communications_manager:14.0su4:*:*:*:*:*:*:*
cisco unified_communications_manager 14.0su4a cpe:2.3:a:cisco:unified_communications_manager:14.0su4a:*:*:*:*:*:*:*
cisco unified_communications_manager 15.0 cpe:2.3:a:cisco:unified_communications_manager:15.0:*:*:*:*:*:*:*

References for CVE-2024-20488

cvelogic Threat Intelligence