Cisco Identity Services Engine Authentication Bypass Vulnerabilities
Multiple vulnerabilities in Cisco Identity Services Engine (ISE) could allow a remote attacker to bypass authorization mechanisms or examine error messages to gain access to sensitive information on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-bypass-uxjRXGpb Security Impact Rating: Medium CVE: CVE-2026-20193,CVE-2026-20195
CSIRTS triage
- What
- Multiple vulnerabilities could allow a remote attacker to bypass authorization mechanisms or access sensitive information.
- Who is affected
- Users of Cisco Identity Services Engine are affected.
- Urgency
- Remediation is urgent due to the potential for unauthorized access and information disclosure.
- Action
- Update to the latest software version provided by Cisco.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-201930.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
- Low exploitation riskCVE-2026-201950.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-20193 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-20195 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Cisco Identity Services
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalCisco Identity Services Engine Remote Code Execution and Information Disclosure Vulnerabilitiescisco-psirt · 2026-07-06
- unknownNCSC-2026-0208 [1.00] [M/H] Vulnerabilities fixed in Cisco Identity Services Enginencsc-nl · 2026-06-19
- mediumCisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilitiescisco-psirt · 2026-05-05
- criticalCisco Identity Services Engine Remote Code Execution and Path Traversal Vulnerabilitiescisco-psirt · 2026-04-28
- criticalCisco Identity Services Engine Remote Code Execution Vulnerabilitiescisco-psirt · 2026-04-15
- mediumCisco Identity Services Engine Authenticated Privilege Escalation Vulnerabilitycisco-psirt · 2026-04-15
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