CVE-2026-18740 IBM CVE debrief

Who should care

Defenders responsible for IBM Security Verify Access and IBM Verify Identity Access deployments should assess exposure and verify authentication and authorization controls. Security teams should prioritize patching and monitoring for unusual activity.

Why it matters

CVE-2026-18740 is a high-severity vulnerability in IBM Security Verify Access and IBM Verify Identity Access, potentially allowing remote authenticated attackers to perform unauthorized actions due to argument injection. Defenders should prioritize verification of authentication and authorization controls, patching affected versions, and monitoring for unusual activity. Evidence is limited on potential exploitation or impact, requiring further verification from official sources.

• Potential unauthorized actions by remote authenticated attackers
• Need for verification of authentication and authorization controls
• Priority for patching affected versions
• Monitoring for unusual activity in affected systems

Technical summary

IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 are vulnerable to argument injection. A remote authenticated attacker could potentially exploit this vulnerability to perform unauthorized actions. The vulnerability allows attackers to inject malicious arguments, potentially leading to unauthorized actions. IBM has provided patches for affected versions, and defenders should verify and apply these patches, review authentication and authorization controls, and monitor for unusual activity or unauthorized actions in

Defensive priority

High priority for authentication and authorization control verification

Recommended defensive actions

• Verify and apply IBM-provided patches for affected versions
• Review authentication and authorization controls for Security Verify Access and Verify Identity Access
• Monitor for unusual activity or unauthorized actions in affected systems

Evidence notes

The CVE record and source item provide details on the vulnerability in IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3. Limited information is available on potential exploitation or impact.

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.