CVE-2025-20205 | Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerability

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface.  These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit these vulnerabilities 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. To exploit these vulnerabilities, the attacker must have valid administrative credentials.

Published: 2025-02-05 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-20205 is rated Low Risk (25.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.06%). Mandatory action: 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-2025-20205

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 2026-05-22 0.04% 0.06% +0.02%
2 2026-03-16 0.07% 0.04% -0.03%
3 2025-11-21 0.07%

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-20205

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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.
1.7 2.7 [email protected]
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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.
1.7 2.7 [email protected]

Weakness enumeration for CVE-2025-20205

Affected software / configurations for CVE-2025-20205

Vendor Product Version Raw CPE
cisco identity_services_engine >= 3.0.0, < 3.2 cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*

References for CVE-2025-20205

cvelogic Threat Intelligence