# CVE-2026-83463: Oracle Mobile Application Server auth bypass in MWA Terminal Server

Source: https://junglewise.ai/threats/cve-2026-83463-oracle-mobile-application-server-auth-bypass-in-mwa-terminal  
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-2026-83463 · Severity: high · CVSS 7.5 · Published 2026-09-15

Oracle Mobile Application Server is a core component of Oracle E-Business Suite that handles mobile application traffic and terminal server communications. An unauthenticated attacker with physical access to the network segment where the server resides can exploit a difficult-to-exploit vulnerability to take complete control of the server, potentially compromising sensitive business data and disrupting operations across the entire E-Business Suite environment.

Technologies: [Oracle Mobile Application Server](https://junglewise.ai/threats/technologies/mobile-application-server). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-83463 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83463 being exploited in the wild.

**How severe is CVE-2026-83463?** High severity, with a CVSS score of 7.5, published 15 September 2026.

**Which products and versions are affected?** Oracle Mobile Application Server 12.2.3 to 12.2.15.

**Is there a fix for CVE-2026-83463?** 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-2026-83463 attacked?** It is attacked from the adjacent network, in a network appliance.

**Am I affected by CVE-2026-83463?** Check whether you run Oracle Mobile Application 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 exists in the MWA Terminal Server component of Oracle Mobile Application Server and allows unauthenticated remote code execution or system compromise. The attack requires adjacent network access (physical proximity to the communication segment) but no authentication credentials or user interaction, making it accessible to network-adjacent attackers. The difficulty of exploitation is elevated by unspecified complexity factors (AC:H), but successful exploitation results in complete system takeover with high impact to confidentiality, integrity, and availability. The vulnerability affects versions 12.2.3 through 12.2.15 of Oracle E-Business Suite's Mobile Application Server.

## Affected products

- Oracle Mobile Application Server 12.2.3 to 12.2.15

## 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 Mobile Application Server authorization bypass in MWA Terminal Server](https://junglewise.ai/threats/cve-2026-101829-vulnerability-in-the-oracle-mobile-application-server-product-of)
- [Oracle Mobile Application Server unauthorized data access in MWA Terminal Server](https://junglewise.ai/threats/cve-2026-101828-vulnerability-in-the-oracle-mobile-application-server-product-of)
- [Oracle Mobile Application Server denial of service and data manipulation](https://junglewise.ai/threats/cve-2026-83465-oracle-mobile-application-server-denial-of-service-and-data)
- [Oracle Mobile Application Server unauthenticated network compromise](https://junglewise.ai/threats/cve-2026-83464-oracle-mobile-application-server-unauthenticated-network)
- [Oracle Mobile Application Server data exposure in MWA Terminal Server](https://junglewise.ai/threats/cve-2026-70732-oracle-mobile-application-server-data-exposure-in-mwa-terminal)