CVE-2020-14644 Oracle WebLogic Server Remote Code Execution

Exploited in the wild Critical 9.8 Published 15 Jul 2020 Updated 12 Jan 2026

Unauthenticated attackers can achieve full server takeover via network access using IIOP or T3 protocols.

Exploited in the wild: Since 18 Sep 2024
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-14644?

CVE-2020-14644 is a critical unsafe deserialization vulnerability in Oracle Weblogic Server, published on 15 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Which versions are affected by CVE-2020-14644?

It affects 1 product.

Products include Oracle Weblogic Server.

How do I fix CVE-2020-14644?

No fix has been published for CVE-2020-14644 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 9 Oct 2024.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2020-14644 being exploited?

Yes. Attackers have exploited CVE-2020-14644 in the wild since at least 18 Sep 2024.

Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.

All Oracle Weblogic Server vulnerabilities

Sources

Also known as GHSA-rfrh-3q7r-m8g9.