CVE-2026-76425 Cisco CVE debrief

Who should care

Defenders responsible for Cisco ISE deployments, security teams monitoring API activity, and administrators with access to Cisco ISE should assess exposure and implement defensive measures.

Why it matters

CVE-2026-76425 is a high-severity vulnerability in Cisco ISE APIs that allows authenticated attackers to conduct SQL injection attacks, potentially leading to data breaches and SSRF attacks. Defenders should prioritize verifying exposure, assessing inventory, and enhancing security measures.

• Potential data breaches through arbitrary database content reading
• Risk of server-side request forgery (SSRF) attacks
• Need for enhanced monitoring and validation of API inputs

Technical summary

The vulnerability exists in Cisco ISE APIs due to insufficient validation of certain parameters, allowing attackers to inject SQL statements. Successful exploitation could enable reading arbitrary database content and conducting SSRF attacks, requiring valid administrative credentials. This SQL injection vulnerability can be exploited by sending crafted requests containing SQL statements to affected endpoints, potentially leading to data breaches and server-side request forgery attacks. Defenders should focus on validating API inputs and enhancing security measures to mitigate these risks.

Defensive priority

Defenders should prioritize verifying exposure, assessing inventory for Cisco ISE deployments, and monitoring for suspicious API activity.

Recommended defensive actions

• Verify Cisco ISE inventory and assess exposure
• Monitor API activity for suspicious SQL queries
• Implement additional authentication and input validation measures
• 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

The CVE record and NVD entry provide details on the vulnerability. Cisco's security advisory is referenced but not detailed in the corpus. Evidence is limited; defenders should verify affected scope and vendor guidance with official sources, focusing on potential SQL injection risks and data exposure. Additional verification tasks are recommended due to limited source detail.

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.