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Cisco Zero-Day Highlights API Endpoint Authentication Issues

Dark Reading·September 18, 2026·1 min read
Cisco Zero-Day Highlights API Endpoint Authentication Issues

Cisco disclosed CVE-2026-76460, an authentication bypass flaw in its Identity Services Engine (ISE) with a maximum CVSS score of 10 out of 10. The vulnerability highlights API endpoint authentication issues, allowing attackers to bypass security controls. Cisco has not yet released a patch, urging administrators to monitor for updates and apply mitigations.

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