Adobe ColdFusion CVE-2026-106620: Critical Auth Bypass Yields Write Access Without Interaction

Adobe ColdFusion contains an incorrect authorization vulnerability that permits unauthorized write access. According to the National Vulnerability Database, this flaw allows low-privileged attackers to bypass security features. The issue is classified as critical with a CVSS score of 9.6. Security teams should assess exposure immediately, as the vulnerability exists in widely deployed versions of the application server.

Root cause

The National Vulnerability Database identifies the weakness as CWE-863, incorrect authorization. This classification indicates a failure in validating user permissions before granting access. The source material notes that the scope of the vulnerability is changed, a technical detail recorded in the CVSS vector. No further technical details regarding the specific code logic or implementation error are provided in the public record.

Attack path

An attacker with low privileges can leverage this vulnerability to bypass security measures. The National Vulnerability Database states that exploitation does not require user interaction. This means the attacker does not need to trick a user into clicking a link or opening a file. The attacker can directly access the system to gain unauthorized write capabilities, potentially altering data or configurations without detection.

Affected versions

• Adobe ColdFusion 2025 up to version 2025.0.13
• Adobe ColdFusion 2023 up to version 2023.0.25

These are the only versions listed in the National Vulnerability Database record. Organizations running these specific releases are exposed to the incorrect authorization vulnerability. Versions outside this range are not mentioned in the advisory.

Mitigation

• No fix has been confirmed yet in the source material.
• Verify if your environment runs affected ColdFusion versions.
• Monitor for unauthorized write attempts on the server.
• Restrict network access to the ColdFusion application where possible.

Detection notes

Security operations teams should review application logs for write operations initiated by low-privileged accounts. Look for anomalies in file system changes or database updates that do not align with normal user behavior. Check for unusual HTTP requests that bypass standard authentication checks. If suspicious activity is detected, isolate the affected server to prevent further unauthorized access. Monitor for any lateral movement indicators that suggest an attacker is escalating privileges.

What to do and how to stay safe: Adobe ColdFusion

• Audit your ColdFusion installations to determine if they are within the affected version ranges.
• Implement network segmentation to limit access to the ColdFusion server.
• Enable detailed logging for all write operations and user authentication events.
• Prepare an incident response plan in case unauthorized access is detected.

Step-by-step guide: Unpatched Software Myths: Why Common Beliefs Fail to Protect You

General security guidance from the BlueTeam Insider newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

What is the severity of CVE-2026-106620?

The National Vulnerability Database rates it as Critical with a CVSS score of 9.6.

Does exploiting this vulnerability require user interaction?

No, exploitation does not require user interaction according to the source material.

Which versions of Adobe ColdFusion are affected?

ColdFusion 2025 up to 2025.0.13 and ColdFusion 2023 up to 2023.0.25 are affected.