Threat video1:00
CVE-2026-20241 Cisco ISE Auth Bypass: Detection & IOCs
Cisco fixes an unauthenticated ISE and ISE-PIC bypass, UCS Central RCE and Unified CM XSS: 12 IOCs and 9 detection rules, with a free Splunk SPL rule.
Read the full threat intel for CVE-2026-20241 Cisco ISE Auth Bypass: Detection & IOCs →
Chapters
- 0:00The hookThree Cisco flaws patched.
- 0:04The storyPath traversal, authorization bypass and cross-site scripting.
- 0:10Attack pathAccording to Cisco, path traversal in UCS Central needs patching.
- 0:25AttributionNo threat actor is attributed.
- 0:30Indicators of compromise3 indicators to hunt: 3 URLs.
- 0:35MITRE ATT&CK techniques8 ATT&CK techniques, from initial access to collection.
- 0:40Remediation4 steps now: Inventory Cisco ISE/ISE-PIC, UCS Central and Unified CM/SME deployments.
- 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript
0:00Three Cisco flaws patched.
0:05Path traversal, authorization bypass and cross-site scripting.
0:09Patches released.
0:11According to Cisco, path traversal in UCS Central needs patching.
0:15Crafted requests to ISE bypass authorization and leak certificates.
0:20Cross-site scripting affects Unified CM.
0:26No threat actor is attributed. Confidence: low.
0:303 indicators to hunt: 3 URLs.
0:368 ATT&CK techniques, from initial access to collection.
0:404 steps now: Inventory Cisco ISE/ISE-PIC, UCS Central and Unified CM/SME deployments.
0:519 detection rules, in SPL, KQL and Sigma.
0:56Threadlinqs. The unified security engineering platform.