Critical ColdFusion Auth Bypass Grants Write Access to Low-Privilege Attackers

Adobe ColdFusion contains a critical authorization vulnerability that could allow attackers to bypass security measures and gain unauthorized write access. The National Vulnerability Database records this flaw as CVE-2026-106620, assigning it a CVSS score of 9.6. Security feature bypasses of this magnitude represent a severe risk to application servers.

The weakness is classified under CWE-863, indicating an incorrect authorization mechanism. According to the NVD record, a low-privileged attacker can leverage this flaw to circumvent intended security controls. This action results in unauthorized write access to resources that should remain protected. The scope of the vulnerability is noted as changed in the assessment.

Critical Severity Assessment

The CVSS score of 9.6 places this issue in the critical category, signaling immediate attention is required for affected systems. The description explicitly states that exploitation does not require user interaction. This characteristic allows automated attacks or remote exploitation without needing to trick a user into clicking a link or opening a file.

The NVD entry specifies that the vulnerability affects the security feature bypass directly. There is no mention of additional prerequisites such as network segmentation failures or specific configuration errors. The primary vector is the incorrect authorization logic within the software itself, which fails to properly restrict write operations.

Affected Versions and Scope

Adobe ColdFusion 2025 is affected up to and including version 2025.0.13. Any installation running these versions lacks the necessary protections against this specific authorization bypass. Administrators should verify their current version immediately to determine if they fall within this affected range.

Adobe ColdFusion 2023 is also affected, specifically versions up to and including 2023.0.25. Organizations maintaining legacy deployments of the 2023 series are equally at risk. The NVD record does not list newer versions as affected, implying that versions higher than those listed may not contain this specific flaw.

What should you do?

No fix has been confirmed yet in the provided source material. Administrators should audit their environments to identify any instances of the affected ColdFusion versions listed above. Until a vendor update is available, consider restricting network access to these servers to reduce exposure. Monitor for official advisories from Adobe regarding this CVE.