Uncontrolled resource consumption in Cisco Identity Services Engine Software
Priority LOW 26CWE-410Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
A vulnerability in a feature that monitors RADIUS requests on Cisco Identity Services Engine (ISE) Software could allow an unauthenticated, remote attacker to negatively affect the performance of an affected device. This vulnerability is due to insufficient management of system resources. An attacker could exploit this vulnerability by taking actions that cause Cisco ISE Software to receive specific RADIUS traffic. A successful and sustained exploit of this vulnerability could allow the attacker to cause reduced performance of the affected device, resulting in significant delays to RADIUS authentications. There are workarounds that address this vulnerability.
Why it matters now
EPSS 0.00986 62nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software | 2.6.0; 2.6.0 p1; 2.6.0 p2; 2.6.0 p3; 2.6.0 p5; 2.6.0 p6; 2.6.0 p7; 2.6.0 p8; 2.6.0 p9; 2.6.0 p10; 2.6.0 p11; 2.6.0 p12; 2.7.0; 2.7.0 p1; 2.7.0 p2; 2.7.0 p3; 2.7.0 p4; 2.7.0 p5; 2.7.0 p6; 2.7.0 p7; 3.0.0; 3.0.0 p1; 3.0.0 p2; 3.0.0 p3; 3.0.0 p4; 3.0.0 p5; 3.1.0; 3.1.0 p1 | — | No fix listed | CNA |
- Cisco Identity Services Engine Software VendorCisco Affected 2.6.0; 2.6.0 p1; 2.6.0 p2; 2.6.0 p3; 2.6.0 p5; 2.6.0 p6; 2.6.0 p7; 2.6.0 p8; 2.6.0 p9; 2.6.0 p10; 2.6.0 p11; 2.6.0 p12; 2.7.0; 2.7.0 p1; 2.7.0 p2; 2.7.0 p3; 2.7.0 p4; 2.7.0 p5; 2.7.0 p6; 2.7.0 p7; 3.0.0; 3.0.0 p1; 3.0.0 p2; 3.0.0 p3; 3.0.0 p4; 3.0.0 p5; 3.1.0; 3.1.0 p1 Fixed in — No fix listed CNA
CPE configurations NVD · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* | before 2.7.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:* | 2.7.0 | 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:2.7.0:patch5:*:*:*:*:*:* | 2.7.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch6:*:*:*:*:*:* | 2.7.0 patch6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch7:*:*:*:*:*:* | 2.7.0 patch7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:* | 3.0.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:* Versions before 2.7.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:* Versions 2.7.0 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:2.7.0:patch5:*:*:*:*:*:* Versions 2.7.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch6:*:*:*:*:*:* Versions 2.7.0 patch6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch7:*:*:*:*:*:* Versions 2.7.0 patch7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:* Versions 3.0.0 Vulnerable ·Cisco
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:3.0.0:patch4:*:*:*:*:*:* | 3.0.0 patch4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch5:*:*:*:*:*:* | 3.0.0 patch5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.1:-:*:*:*:*:*:* | 3.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.1:patch1:*:*:*:*:*:* | 3.1 patch1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:identity_services_engine:3.1:patch3:*:*:*:*:*:* | 3.1 patch3 | 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
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch4:*:*:*:*:*:* Versions 3.0.0 patch4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch5:*:*:*:*:*:* Versions 3.0.0 patch5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.1:-:*:*:*:*:*:* Versions 3.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.1:patch1:*:*:*:*:*:* Versions 3.1 patch1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:identity_services_engine:3.1:patch3:*:*:*:*:*:* Versions 3.1 patch3 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-20937
- 2026-10-03 Alias added: GHSA-pmp2-f627-c94j
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-2022-20937 · CVE Program
- CVE-2022-20937 · NVD
- FIRST EPSS
- GHSA-pmp2-f627-c94j · 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