Cisco’s Cloud Catastrophe: Critical Flaw Exposes ISE to Attackers!
Cisco has patched a dozen vulnerabilities, including a critical flaw in Identity Services Engine (ISE) cloud deployments. With a CVSS score of 9.9, this flaw could let attackers access sensitive data or disrupt services. Cisco urges users to update their systems ASAP; there’s no workaround, but proof-of-concept code is out there.

Hot Take:
In this episode of “Technology: What Could Possibly Go Wrong?” Cisco has dropped a dozen Easter eggs of vulnerabilities, including a showstopping critical flaw that could make hackers’ dreams come true. If you’ve deployed Identity Services Engine (ISE) in the cloud, it’s time to play the world’s fastest game of “Update or Regret It”! With PoC code lurking like an uninvited guest, those credentials are as secure as a marshmallow in a campfire. As for the rest, let’s hope your SSH keys and contact centers have good life insurance policies because they’re in for a ride!
Key Points:
- Cisco fixed a critical vulnerability in Identity Services Engine (ISE) affecting cloud deployments.
- The flaw (CVE-2025-20286) allows attackers to access ISE instances across AWS, Azure, and OCI using improperly generated credentials.
- Two high-severity SSH-related vulnerabilities affect Integrated Management Controller (IMC) and Nexus Dashboard Fabric Controller (NDFC).
- Nine medium-severity flaws were also fixed across various Cisco products.
- Users are urged to update their Cisco appliances immediately, as PoC code exists for some vulnerabilities.