Cisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability
Published Apr 15, 2026
9.9
CRITICALCVSS 3.1
EPSS 5.60%
Description
A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node ISE deployments, successful exploitation of these vulnerabilities could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.
Affected products
-
- Version 3.1.0StatusaffectedConstraints-
- Version 3.1.0 p1StatusaffectedConstraints-
- Version 3.1.0 p10StatusaffectedConstraints-
- Version 3.1.0 p2StatusaffectedConstraints-
- Version 3.1.0 p3StatusaffectedConstraints-
- Version 3.1.0 p4StatusaffectedConstraints-
- Version 3.1.0 p5StatusaffectedConstraints-
- Version 3.1.0 p6StatusaffectedConstraints-
- Version 3.1.0 p7StatusaffectedConstraints-
- Version 3.1.0 p8StatusaffectedConstraints-
- Version 3.1.0 p9StatusaffectedConstraints-
- Version 3.2.0StatusaffectedConstraints-
- Version 3.2.0 p1StatusaffectedConstraints-
- Version 3.2.0 p2StatusaffectedConstraints-
- Version 3.2.0 p3StatusaffectedConstraints-
- Version 3.2.0 p4StatusaffectedConstraints-
- Version 3.2.0 p5StatusaffectedConstraints-
- Version 3.2.0 p6StatusaffectedConstraints-
- Version 3.2.0 p7StatusaffectedConstraints-
- Version 3.3 Patch 1StatusaffectedConstraints-
- Version 3.3 Patch 2StatusaffectedConstraints-
- Version 3.3 Patch 3StatusaffectedConstraints-
- Version 3.3 Patch 4StatusaffectedConstraints-
- Version 3.3 Patch 5StatusaffectedConstraints-
- Version 3.3 Patch 6StatusaffectedConstraints-
- Version 3.3 Patch 7StatusaffectedConstraints-
- Version 3.3.0StatusaffectedConstraints-
- Version 3.4 Patch 1StatusaffectedConstraints-
- Version 3.4 Patch 2StatusaffectedConstraints-
- Version 3.4 Patch 3StatusaffectedConstraints-
- Version 3.4.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software | n/a |
|
- < 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Apr 15, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.60% (0.05601) | 92.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.91% (0.05910) | 92.27th | v5 (v2026.06.15) |
| Apr 16, 2026 | 0.23% (0.00230) | 45.85th | v4 (v2025.03.14) |
References (1)
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv | Vendor Advisory |
Change history (0)
No recorded changes yet.