CVE-2026-76448 Cisco CVE debrief

Who should care

System administrators and security teams responsible for Cisco ISE and ISE-PIC systems should assess exposure and prioritize patching, especially for systems with administrative access exposed to remote attackers.

Why it matters

CVE-2026-76448 is a medium-severity vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) that allows authenticated remote attackers to conduct SQL or HQL injection attacks. Defenders should prioritize verifying and patching affected systems, restricting administrative access, and monitoring for suspicious activity.

• Potential unauthorized data access or modification
• Increased risk of lateral movement within the network
• Need for verification of affected systems and patch application
• Potential disruption of identity services

Technical summary

The vulnerability exists in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) due to insufficient validation of user-supplied input to the affected APIs. This allows an authenticated, remote attacker to conduct SQL or HQL injection attacks, potentially leading to unauthorized data access or modification. Defenders should prioritize verifying and patching affected Cisco ISE and ISE-PIC systems, especially those with administrative access exposed to remote attackers, and restrict administrative access.

Defensive priority

Defenders should prioritize verifying and patching affected Cisco ISE and ISE-PIC systems, especially those with administrative access exposed to remote attackers.

Recommended defensive actions

• Verify and apply patches for affected Cisco ISE and ISE-PIC systems
• Restrict administrative access to Cisco ISE and ISE-PIC systems
• Monitor Cisco ISE and ISE-PIC systems for suspicious activity
• Implement additional security measures to detect and prevent SQL injection attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• 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

The CVE and NVD records provide details on the vulnerability, affected versions, and potential impacts. Cisco's advisory (ref-3) offers additional context and mitigation guidance. The vulnerability affects Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC), with insufficient validation of user-supplied input to the affected APIs. Defenders should verify and patch affected systems, restricting administrative access and monitoring for suspicious activity.

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.