# CVE-2026-83021: Oracle WebLogic Server remote code execution in Web Container

Source: https://junglewise.ai/threats/cve-2026-83021-oracle-weblogic-server-remote-code-execution-in-web-container  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83021 · Severity: critical · CVSS 10 · Published 2026-09-15

Oracle WebLogic Server is a Java application server used to run enterprise applications and web services in corporate environments. An unauthenticated network attacker can exploit a vulnerability in the Web Container component to remotely execute code and fully compromise the server, potentially affecting other connected systems and applications. This is a critical issue requiring immediate patching.

Technologies: [Oracle WebLogic Server](https://junglewise.ai/threats/technologies/weblogic-server). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-83021 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83021 being exploited in the wild.

**How severe is CVE-2026-83021?** Critical severity, with a CVSS score of 10, published 15 September 2026.

**Which products and versions are affected?** Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0.

**Is there a fix for CVE-2026-83021?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-83021 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-83021?** Check whether you run Oracle WebLogic Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability in the Web Container component of Oracle WebLogic Server is easily exploitable and requires no authentication or user interaction. An unauthenticated attacker with network access can send a specially crafted HTTP request to trigger the flaw and achieve remote code execution. The vulnerability has scope change, meaning successful exploitation may impact additional products beyond WebLogic Server itself. The affected versions are 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0. Patches are expected to be available through Oracle's security update process.

## Affected products

- Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0

## Timeline

- 2026-09-15: disclosed

## References

- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.html)

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