CVE-2026-76427
Cisco ISE XML External Entity Injection Vulnerability
Description
A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device. This vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface. A successful exploit could allow the attacker to read arbitrary files from the file system and issue requests to internal systems from the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.
Weakness: CWE-611
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco ISE Passive Identity Connector | Identity / IAM / MFA | cna-assigner |
| Cisco | Cisco Identity Services Engine (ISE) Check your version | Identity / IAM / MFA | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco Identity Services Engine Software
- Cisco · Cisco ISE Passive Identity Connector
Vendor advisory
Cisco Identity Services Engine Vulnerabilities
Cisco’s rating: Critical (advisory CVSS 10.0) · Published Sep 16, 2026
Bug IDs: CSCwu20156 , CSCwu26054 , CSCwu26055 , CSCwu27428 , CSCwu39998 , CSCwu43502
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from