Cisco Identity Services Engine Cross-Site Scripting Vulnerability
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an authenticated, remote attacker with administrative credentials 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 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 interface or access sensitive, browser-based information. To exploit this vulnerability, an attacker would need valid administrative credentials.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00594 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software | all versions | — | No fix listed | CNA |
- Cisco Identity Services Engine Software VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 57
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* | before 2.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:-:*:*:*:*:*:* | 2.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch1:*:*:*:*:*:* | 2.2.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch10:*:*:*:*:*:* | 2.2.0 patch10 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch12:*:*:*:*:*:* | 2.2.0 patch12 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch13:*:*:*:*:*:* | 2.2.0 patch13 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch14:*:*:*:*:*:* | 2.2.0 patch14 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch15:*:*:*:*:*:* | 2.2.0 patch15 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch16:*:*:*:*:*:* | 2.2.0 patch16 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch17:*:*:*:*:*:* | 2.2.0 patch17 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* Versions before 2.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:-:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch1:*:*:*:*:*:* Versions 2.2.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch10:*:*:*:*:*:* Versions 2.2.0 patch10 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch12:*:*:*:*:*:* Versions 2.2.0 patch12 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch13:*:*:*:*:*:* Versions 2.2.0 patch13 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch14:*:*:*:*:*:* Versions 2.2.0 patch14 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch15:*:*:*:*:*:* Versions 2.2.0 patch15 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch16:*:*:*:*:*:* Versions 2.2.0 patch16 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch17:*:*:*:*:*:* Versions 2.2.0 patch17 Vulnerable ·Cisco
Show 47 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch2:*:*:*:*:*:* | 2.2.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch3:*:*:*:*:*:* | 2.2.0 patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch4:*:*:*:*:*:* | 2.2.0 patch4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch5:*:*:*:*:*:* | 2.2.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch6:*:*:*:*:*:* | 2.2.0 patch6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch7:*:*:*:*:*:* | 2.2.0 patch7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch8:*:*:*:*:*:* | 2.2.0 patch8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch9:*:*:*:*:*:* | 2.2.0 patch9 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:-:*:*:*:*:*:* | 2.3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch1:*:*:*:*:*:* | 2.3.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch2:*:*:*:*:*:* | 2.3.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch3:*:*:*:*:*:* | 2.3.0 patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch4:*:*:*:*:*:* | 2.3.0 patch4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch5:*:*:*:*:*:* | 2.3.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch6:*:*:*:*:*:* | 2.3.0 patch6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch7:*:*:*:*:*:* | 2.3.0 patch7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:-:*:*:*:*:*:* | 2.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch1:*:*:*:*:*:* | 2.4.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch10:*:*:*:*:*:* | 2.4.0 patch10 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch11:*:*:*:*:*:* | 2.4.0 patch11 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch12:*:*:*:*:*:* | 2.4.0 patch12 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch13:*:*:*:*:*:* | 2.4.0 patch13 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch14:*:*:*:*:*:* | 2.4.0 patch14 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch2:*:*:*:*:*:* | 2.4.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch3:*:*:*:*:*:* | 2.4.0 patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch4:*:*:*:*:*:* | 2.4.0 patch4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch5:*:*:*:*:*:* | 2.4.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch6:*:*:*:*:*:* | 2.4.0 patch6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch7:*:*:*:*:*:* | 2.4.0 patch7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch8:*:*:*:*:*:* | 2.4.0 patch8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch9:*:*:*:*:*:* | 2.4.0 patch9 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:* | 2.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:* | 2.6.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:* | 2.6.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:* | 2.6.0 patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:* | 2.6.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:* | 2.6.0 patch6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:* | 2.6.0 patch7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:* | 2.6.0 patch8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:* | 2.6.0 patch9 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:* | 2.7.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:* | 2.7.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:* | 2.7.0 patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:* | 2.7.0 patch4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:* | 3.0.0 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:* | 3.0.0 patch2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch3:*:*:*:*:*:* | 3.0.0 patch3 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch2:*:*:*:*:*:* Versions 2.2.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch3:*:*:*:*:*:* Versions 2.2.0 patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch4:*:*:*:*:*:* Versions 2.2.0 patch4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch5:*:*:*:*:*:* Versions 2.2.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch6:*:*:*:*:*:* Versions 2.2.0 patch6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch7:*:*:*:*:*:* Versions 2.2.0 patch7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch8:*:*:*:*:*:* Versions 2.2.0 patch8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch9:*:*:*:*:*:* Versions 2.2.0 patch9 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:-:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch1:*:*:*:*:*:* Versions 2.3.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch2:*:*:*:*:*:* Versions 2.3.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch3:*:*:*:*:*:* Versions 2.3.0 patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch4:*:*:*:*:*:* Versions 2.3.0 patch4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch5:*:*:*:*:*:* Versions 2.3.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch6:*:*:*:*:*:* Versions 2.3.0 patch6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.3.0:patch7:*:*:*:*:*:* Versions 2.3.0 patch7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:-:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch1:*:*:*:*:*:* Versions 2.4.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch10:*:*:*:*:*:* Versions 2.4.0 patch10 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch11:*:*:*:*:*:* Versions 2.4.0 patch11 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch12:*:*:*:*:*:* Versions 2.4.0 patch12 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch13:*:*:*:*:*:* Versions 2.4.0 patch13 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch14:*:*:*:*:*:* Versions 2.4.0 patch14 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch2:*:*:*:*:*:* Versions 2.4.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch3:*:*:*:*:*:* Versions 2.4.0 patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch4:*:*:*:*:*:* Versions 2.4.0 patch4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch5:*:*:*:*:*:* Versions 2.4.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch6:*:*:*:*:*:* Versions 2.4.0 patch6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch7:*:*:*:*:*:* Versions 2.4.0 patch7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch8:*:*:*:*:*:* Versions 2.4.0 patch8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch9:*:*:*:*:*:* Versions 2.4.0 patch9 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:* Versions 2.6.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:* Versions 2.6.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:* Versions 2.6.0 patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:* Versions 2.6.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:* Versions 2.6.0 patch6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:* Versions 2.6.0 patch7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:* Versions 2.6.0 patch8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:* Versions 2.6.0 patch9 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:* Versions 2.7.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:* Versions 2.7.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:* Versions 2.7.0 patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:* Versions 2.7.0 patch4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:* Versions 3.0.0 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:* Versions 3.0.0 patch2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch3:*:*:*:*:*:* Versions 3.0.0 patch3 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-34759
- 2026-10-03 Alias added: GHSA-2cqv-3cxq-c469
References
More Cisco Identity Services Engine vulnerabilities
- TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
- TI-2025-14632 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
- TI-2025-14578 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2025-14579 Cisco ISE API Unauthenticated Remote Code Execution Vulnerability CVSS 3.1CRITICAL 10.0
- TI-2022-05522 OS command injection in Cisco Identity Services Engine Software CVSS 3.1HIGH 8.8
Sources
- CVE-2021-34759 · CVE Program
- CVE-2021-34759 · NVD
- FIRST EPSS
- GHSA-2cqv-3cxq-c469 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences