Whatever message this page gives is out now! Go check it out!

ColdFusion (2021 release) Update 12

Last update:
May 18, 2026
ColdFusion (2021 release) Update 12

Security recommendations

For all security updates, Adobe recommends applying the security configuration settings outlined on the ColdFusion Security page and reviewing the respective Lockdown guides.
Warning:
Check if you need to create and configure connectors after installing the update. View the section Connector Configuration Table for more information.

What's new and changed

Note:
The updates below are cumulative and contain all updates from previous ones. If you are skipping updates, you can apply the latest update, not those you are skipping. Further, you must take note of any changes that are implemented in each of the updates you are skipping.
To install previous updates, see ColdFusion (2021 release) updates.
ColdFusion (2021 release) Update 12 (release date, November 14, 2023) addresses vulnerabilities that are mentioned in the security bulletin, APSB23-52. These updates resolve critical vulnerabilities that could lead to the deserialization of untrusted data, improper access control, and others.
This update also removes the cf-logging.jar file and creates its backup in the updates folder.
ColdFusion packages or classes will also be validated by cfserialfilter before Wddx deserialization. View ColdFusion serialfilter for more information.
From the next update onwards, you can use the package manager workflow enhancements in Update 5 when there are package upgrades. View the Update 11 tech notes for more information.
Note:
You can use JDK 11.0.20 or higher to apply the update from the ColdFusion Admin.

ColdFusion JDK flag requirements

COLDFUSION 2021 (version 2021.0.0.323925) and above

For Application Servers  
On JEE installations, set the following JVM flag, "-Djdk.serialFilter= !org.mozilla.**;!com.sun.syndication.**;!org.apache.commons.beanutils.**;!org.jgroups.**;!com.sun.rowset.**", in the respective startup file depending on the type of Application Server being used.
For example:
  • Apache Tomcat Application Server: edit JAVA_OPTS in the ‘Catalina.bat/sh’ file
  • WebLogic Application Server: edit JAVA_OPTIONS in the ‘startWeblogic.cmd’ file
  • WildFly/EAP Application Server: edit JAVA_OPTS in the ‘standalone.conf’ file
Set the JVM flags on a JEE installation of ColdFusion, not on a standalone installation.

Prerequisites

  1. On 64-bit computers, use 64-bit JRE for 64-bit ColdFusion.
  2. If the ColdFusion server is behind a proxy, specify the proxy settings for the server to get the update notification and download the updates. Specify proxy settings using the system properties below in the jvm.config for a stand-alone installation, or corresponding script file for JEE installation.
    • http.proxyHost
    • http.proxyPort
    • http.proxyUser
    • http.proxyPassword
  3. For ColdFusion running on JEE application servers, stop all application server instances before installing the update.

Installation

ColdFusion Administrator

In Package Manager > Packages, click Check for Updates in Core Server.
After it detects an update, click Update. The core package gets updated with the latest update.
All installed packages that needs an update get updated.
Restart ColdFusion for the changes to take effect.
Note:
After installing Update 12, you need not configure the connector. But if you upgrade from Update 10 or earlier, you must configure the connector.
View the following for more information.

Install the update in offline mode manually

  1. Download the hotfix installer from the link.
  2. Unzip the repository to a place where all ColdFusion server instances can access it.
  3. Update "packagesurl" in cfusion/lib/neo_updates.xml of cfusion and all its child instances to point to <InstallerReposityUnzippedPath>/bundles/bundlesdependency.json present inside the downloaded folder.
If the core server hotfix installation is successful and if there are errors or issues with packages, packages can be installed/updated from the package manager client(cfusion\bin\cfpm.bat|cfpm.sh).
You must have privileges to start or stop ColdFusion service and full access to the ColdFusion root directory.
  • Windows:<cf_root>\jre\bin\java.exe -jar <InstallerReposityUnzippedPath>\bundles\updateinstallers\hotfix-012-330257.jar
  • Linux-based platforms:<cf_root>/jre/bin/java -jar  <InstallerReposityUnzippedPath>/bundles/updateinstallers/hotfix-012-330257.jar
Ensure that the JRE bundled with ColdFusion is used for executing the downloaded JAR. For standalone ColdFusion, this must be at, <cf_root>/jre/bin.
Install the update from a user account with permission to restart ColdFusion services and other configured webservers .
For further details on manually updating the application, see the help article.
Note:
If you are on Java 11.0.20 or higher, use the flag java -Djdk.util.zip.disableZip64ExtraFieldValidation=true -jar hotfix.jar.
Note:
Updating the core package updates all the packages that were downloaded. Also, updating any package updates the core and the rest of the packages. If ColdFusion (2021 release) is on Update 1, installing Update 12 via the admin of any instance updates the core for all other instances present.
Similarly, uninstalling the update from the same instance uninstalls the updates from instances that were updated together.

Post installation

Note:
After applying this update, the ColdFusion build number should be 2021.0.12.330257.

Uninstallation

To uninstall the update, perform one of the following:
  • In ColdFusion Administrator, click Uninstall in Server Update > Updates > Installed Updates.
  • Run the uninstaller for the update from the command prompt. For example, java -jar {cf_install_home}/{instance_home}/hf_updates/hf-2021-00012-330257/uninstall /uninstaller.jar
If you can't uninstall the update using the above-mentioned uninstall options, the uninstaller could be corrupted. However, you can manually uninstall the update by doing the following:
  1. Delete the update jar from {cf_install_home}/{instance_name}/lib/updates.
  2. Copy all folders from {cf_install_home}/{instance_name}/hf-updates/{hf-2021-00012-330257}/backup directory to {cf_install_home}/{instance_name}/

Connector configuration

2021 UpdateConnector recreation required
Update 12
No.
However, if upgrading from Update 10 or any previous update, you must recreate the connector.
View the following for more information.
Update 11Yes
Update 10No
Update 9No
Update 8No
Update 7No
Update 6No
Update 5No
Update 4No
Update 3No. You need not upgrade the connector if you had already upgraded the connector in Update 2.
Update 2Yes
Update 1Yes

Packages updated

UpdatePackages updated
Update 12No
Update 11Yes
Update 10No
Update 9No
Update 8No
Update 7No
Update 6Yes
Update 5Yes
Update 4Yes
Update 3Yes
Update 2Yes
Update 1Yes

Share this page

Was this page helpful?
We're glad. Tell us how this page helped.
We're sorry. Can you tell us what didn't work for you?
Thank you for your feedback. Your response will help improve this page.

On this page