CVE-2026-76450 Cisco CVE debrief

Who should care

Cisco ISE and ISE-PIC administrators, security teams responsible for validating input and monitoring database queries, and IT teams managing network access control systems should be aware of this vulnerability. They should assess their exposure, verify patch status, and implement compensating controls if necessary. Additionally, incident response teams may need to review logs and monitor for suspicious activity related to this vulnerability.

Why it matters

CVE-2026-76450 is a medium-severity SQL injection vulnerability in Cisco ISE and ISE-PIC. Authenticated remote attackers could exploit this to execute arbitrary SQL or HQL queries, potentially accessing or modifying unauthorized data. Cisco provides advisory details.

• Potential data exposure or modification due to unauthorized SQL queries
• Requires verification of input validation and database query practices
• May necessitate patching or compensating controls for affected systems
• Highlights need for monitoring and incident response planning

Technical summary

CVE-2026-76450 is a SQL injection vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). Insufficient input validation allows authenticated remote attackers to execute arbitrary SQL or HQL queries, potentially leading to unauthorized data access or modification. The vulnerability is due to insufficient validation of user-supplied input to the affected APIs before it is used to build database queries. Cisco provides advisory details on affected versions and mitigation strategies.

Defensive priority

Medium priority for Cisco ISE and ISE-PIC administrators to assess exposure and verify patches

Recommended defensive actions

• Assess exposure of Cisco ISE and ISE-PIC deployments
• Verify administrative credentials and API input validation
• Apply patches or compensating controls as recommended by Cisco
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Official CVE and NVD records provide details on the SQL injection vulnerability in Cisco ISE and ISE-PIC. Cisco advisory (cisco-sa-ise-multisql-inject-JnHK54Rq) offers additional information. The vulnerability is due to insufficient validation of user-supplied input to the affected APIs. Attackers must have valid administrative credentials to exploit this vulnerability. Cisco ISE and ISE-PIC administrators should review the advisory for specific patching instructions and consider compensating controls if immediate patching is not feas

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.