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CVE-2026-20192 is a Cisco software-hardening umbrella CVE for multiple internally discovered improper access control vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). The underlying issues can permit an unauthenticated remote attacker to bypass authorization or other security controls. Cisco assigns the CVE a CVSS v3 score of 10.0, representing the highest-severity issue in the grouped vulnerability class.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An improper access-control flaw in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) that can enable unauthenticated bypass of security controls, sensitive-data access, configuration modification, and availability impact.
A critical vulnerability affecting Cisco Identity Services Engine. The article associates the ISE flaw set with authentication bypass and possible malicious-code execution.
Unauthenticated authorization-bypass vulnerability in Cisco ISE and ISE-PIC.
A Cisco internally discovered improper-access-control vulnerability grouping addressed through a software-hardening release for Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.