# CVE-2026-70757: Oracle WebLogic Server unauthenticated remote code execution

Source: https://junglewise.ai/threats/cve-2026-70757-oracle-weblogic-server-unauthenticated-remote-code-execution  
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-2026-70757 · Severity: critical · CVSS 9.8 · Published 2026-09-15

Oracle WebLogic Server is a Java application server used to run enterprise applications and services. An unauthenticated attacker on the network can exploit a vulnerability in the Core component via T3 or IIOP protocols to achieve complete control over the server, enabling takeover of applications and data hosted on it.

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

## Quick answers

**Is CVE-2026-70757 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-70757 being exploited in the wild.

**How severe is CVE-2026-70757?** Critical severity, with a CVSS score of 9.8, 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, 15.1.1.0.0.

**Is there a fix for CVE-2026-70757?** 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-2026-70757 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-70757?** 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

The vulnerability is a remote code execution flaw in Oracle WebLogic Server's Core component that can be exploited by an unauthenticated attacker with network access via the T3 (Oracle proprietary) or IIOP (Inter-ORB) protocols. No user interaction or authentication is required; the vulnerability is easily exploitable due to low attack complexity. Successful exploitation results in complete compromise of the WebLogic Server, granting an attacker the ability to execute arbitrary code, read/modify data, and disrupt availability. Affected versions include 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. Patches or mitigations should be obtained from Oracle's security advisories.

## Affected products

- Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0

## Timeline

- 2026-09-15: disclosed

## References

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

## Related threats

- [Oracle WebLogic Server data modification and DoS in Core](https://junglewise.ai/threats/cve-2026-91502-vulnerability-in-the-oracle-weblogic-server-product-of-oracle)
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- [Oracle WebLogic Server unauthorized data access in Core](https://junglewise.ai/threats/cve-2026-87302-vulnerability-in-the-oracle-weblogic-server-product-of-oracle)
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- [Oracle WebLogic Server information disclosure in third-party jars](https://junglewise.ai/threats/cve-2026-101515-vulnerability-in-the-oracle-weblogic-server-product-of-oracle)