CVE-2026-105903 Adobe CVE debrief

Who should care

Administrators and security teams responsible for Adobe ColdFusion deployments, especially those with internet-facing interfaces or hosting sensitive data, should assess exposure and apply remediation to prevent potential exploitation.

Why it matters

CVE-2026-105903 is a critical vulnerability in Adobe ColdFusion that allows for code injection attacks, potentially leading to arbitrary code execution. Administrators and security teams should assess exposure and apply remediation to prevent potential exploitation.

• Potential for arbitrary code execution in the context of the current user.
• Low-privileged attackers can exploit the vulnerability without user interaction.
• Critical CVSS score of 9.9 indicates high severity.
• Scope is changed, indicating potential for lateral movement.

Technical summary

The vulnerability is caused by improper control of generation of code, allowing for code injection attacks. A low-privileged attacker could exploit this vulnerability to execute arbitrary code in the context of the current user without requiring user interaction. The vulnerability affects ColdFusion 2025 and 2023, with CVSS score of 9.9. Affected product context indicates high priority for assessing exposure and applying remediation, especially for internet-facing interfaces or hosting sensitive data. Defensive impact includes potential for arbitrary code execution, lateral movement, and high severity due to the critical CVSS score.

Defensive priority

High priority should be given to assessing exposure and applying remediation to ColdFusion 2025 and 2023 deployments, especially those with internet-facing interfaces or hosting sensitive data.

Recommended defensive actions

• Assess exposure of ColdFusion 2025 and 2023 deployments, especially those with internet-facing interfaces or hosting sensitive data.
• Apply remediation by upgrading to unaffected versions (ColdFusion 2025.0.14 or 2023.0.26).
• Monitor for potential exploitation attempts and review system logs for suspicious activity.
• Verify the integrity of affected systems and consider compensating controls if immediate remediation is not feasible.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information on the vulnerability. Adobe's vendor advisory is also available for affected products. Affected product deployments should be confirmed in managed environments, and owners assigned for follow-up. The official advisory or CVE record should be reviewed to validate affected scope, severity, and vendor guidance. Vendor-supported updates or mitigations should be planned through normal change control where exposure is confirmed. Compensating controls should be

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.