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On February 22, 2022, we released a new version of Apigee Edge for Private Cloud.

**Note:** This version will be supported until February 22, 2023.

> [!NOTE]
> **Note about the Apache Log4j vulnerability:**
>
> <br />
>
> Edge for Private Cloud's default configuration contains Log4j 2 but
> is not vulnerable to Log4j 2
> ([CVE-2021-44228](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44228)).
>
> Likewise, Edge for Private Cloud is not affected by the
> related vulnerability in Apache Log4j-1.x, which is shipped with ZooKeeper. That
> vulnerability requires a
> specific configuration of Log4j-1.x that Edge for Private Cloud
> does not ship as a default configuration. Therefore the vulnerability is not
> exploitable in Edge for Private Cloud.

> [!NOTE]
> For more information, see the following resources:
>
> - *[Edge for Private Cloud 4.50.00
>   documentation](https://docs.apigee.com/private-cloud/v4.50.00)*
> - *Questions or issues?* Contact [Apigee Edge Support](https://docs.apigee.com/api-platform/troubleshoot/support)
> - *[Edge for Private Cloud support timeline](https://docs.apigee.com/release/apigee-edge-release-process#apigee-edge-for-private-cloud-support-timeline)*
> - *Release notifications* : See [Get Apigee Edge release notifications](https://docs.apigee.com/release/get-release-notifications)

## Update procedure

Updating this release will update the components in the following list of RPMs:

- apigee-machinekey-1.1.4-0.0.20023.noarch.rpm
- edge-management-ui-4.50.00-0.0.20027.noarch.rpm
- edge-ui-4.50.00-0.0.20207.noarch.rpm
- edge-management-ui-static-4.50.00-0.0.20036.noarch.rpm
- edge-gateway-4.50.00-0.0.20160.noarch.rpm
- edge-management-server-4.50.00-0.0.20160.noarch.rpm
- edge-message-processor-4.50.00-0.0.20160.noarch.rpm
- edge-postgres-server-4.50.00-0.0.20160.noarch.rpm
- edge-qpid-server-4.50.00-0.0.20160.noarch.rpm
- edge-router-4.50.00-0.0.20160.noarch.rpm

You can check the RPM versions you currently have installed, to see if they
need to be updated, by entering:

```
apigee-all version
```

To update your installation, perform the following procedure on the Edge nodes:

1. On all Edge nodes:

   1. Clean the Yum repos:

      ```
      sudo yum clean all
      ```
   2. Download the latest Edge 4.50.00 `bootstrap_4.50.00.sh` file to `/tmp/bootstrap_4.50.00.sh`:

      ```
      curl https://software.apigee.com/bootstrap_4.50.00.sh -o /tmp/bootstrap_4.50.00.sh
      ```
   3. Install the Edge 4.50.00 `apigee-service` utility and dependencies:

      ```
      sudo bash /tmp/bootstrap_4.50.00.sh apigeeuser=uName apigeepassword=pWord
      ```

      where <var translate="no">uName</var> and <var translate="no">pWord</var> are the username and password you received from Apigee.
      If you omit <var translate="no">pWord</var>, you will be prompted to enter it.
   4. Use the `source` command to execute the apigee-service.sh script:

      ```
      source /etc/profile.d/apigee-service.sh
      ```
2. Update the `apigee-machinekey` utility:

   ```
   /opt/apigee/apigee-service/bin/apigee-service apigee-machinekey update
   ```
3. On all Edge nodes, execute the `update.sh` script for the edge process:

   ```
   /opt/apigee/apigee-setup/bin/update.sh -c edge -f configFile
   ```
4. On all UI nodes, execute the `update.sh` script for the UI:

   ```
   /opt/apigee/apigee-setup/bin/update.sh -c ui -f configFile
   ```
5. If you are using the New Edge experience, execute the following command:

   ```
   /opt/apigee/apigee-setup/bin/update.sh -c ue -f configFile
   ```
6. If you are using Apigee mTLS, follow the procedure described in [Upgrade Apigee mTLS](https://docs.apigee.com/private-cloud/v4.51.00/mtls-upgrade). For more information, see [Introduction to Apigee
   mTLS](https://docs.apigee.com/private-cloud/v4.51.00/mtls-intro).

## Security issues fixed

No security issues were fixed in this release.

## Changes to
[supported software](https://docs.apigee.com/release/supported-software#apigeeedgeforprivatecloudsupportedversions)

There are no changes to supported software in this release.

## Deprecations and retirements

There are no new deprecations or retirements in this release.

## New features

There are no new features in this release.

## Bug fixes

This section lists the Private Cloud bugs that were fixed in this release.

| Issue ID | Description |
|---|---|
| 215555851 | **Apache Log4j 2.17.1 is now shipped in the thirdparty library of Apigee** The `apigee-machinekey` component no longer uses the Log4j library for logging. `wsdl2apigee` libraries in the UI no longer use Log4j 1.2.X. |
| 204164967 | **Business logic regarding email update is fixed, and a Javascript vulnerability issue was fixed by upgrading knockout.js to version 3.5.1** |

## Known issues

See [Known issues with Edge for Private Cloud](https://docs.apigee.com/release/known-issues#private-cloud)
for a complete list of known issues.