WebLogic Remote Code Execution Vulnerabilities (CVE-2020-14625, CVE-2020-14644, CVE-2020-14645, CVE-2020-14687) Threat Alert

WebLogic Remote Code Execution Vulnerabilities (CVE-2020-14625, CVE-2020-14644, CVE-2020-14645, CVE-2020-14687) Threat Alert

agosto 7, 2020 | Adeline Zhang


On July 15, 2020, Beijing time, Oracle released a Critical Patch Update (CPU) for July 2020 that fixes 443 vulnerabilities of different risk levels.

The WebLogic Server Core component is prone to four severe vulnerabilities with a CVSS base score of 9.8, which are assigned CVE-2020-14625, CVE-2020-14644, CVE-2020-14645, and CVE-2020-14687 respectively.

These vulnerabilities are related to T3 and IIOP protocols and allow unauthenticated attackers to execute code remotely via the Internet.

T3 and IIOP protocols are used to transmit data between WebLogic and other Java programs. The default WebLogic installation automatically enables the console, which, in turn, enables the T3 protocol by default. IIOP allows access to remote objects in the form of Java interfaces, which is enabled by default.

Reference link:


Affected Versions


  • Oracle WebLogic Server,,


  • Oracle WebLogic Server,,


  • Oracle WebLogic Server,,,,


  • Oracle WebLogic Server,,


Oracle has released patches to fix the preceding vulnerabilities. Affected users should visit the official security advisory link to download related patches as soon as possible and apply them as indicated in the readme file to ensure long-term effective protection.

Note: Official patches of Oracle can be downloaded only by those with a licensed account of the software. Such users can use that account to log in to https://support.oracle.com to obtain the latest patches.


If users cannot install patches for the time being, they can disable the T3 and IIOP protocols to protect against the vulnerabilities:

For more information, see Oracle’s official security advisory at the following link:



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