Critical Cisco ISE Auth Bypass Flaw Impacts Cloud Deployments on AWS, Azure, and OCI
Jun 05, 2025
Network Security / Vulnerability
Cisco has released security patches to address a critical security flaw impacting the Identity Services Engine (ISE) that, if successfully exploited, could allow unauthenticated actors to carry out malicious actions on susceptible systems. The security defect, tracked as CVE-2025-20286 , carries a CVSS score of 9.9 out of 10.0. It has been described as a static credential vulnerability. "A vulnerability in Amazon Web Services (AWS), Microsoft Azure, and Oracle Cloud Infrastructure (OCI) cloud deployments of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to access sensitive data, execute limited administrative operations, modify system configurations, or disrupt services within the impacted systems," the company said in an advisory. The networking equipment maker, which credited Kentaro Kawane of GMO Cybersecurity for reporting the flaw, noted it's aware of the existence of a proof-of-concept (PoC) exploit. There is no evidence th...