CVE-2026-83461

Published Sep 15, 2026 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed

Description

Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Mobile Application Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Mobile Application Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Mobile Application Server. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).

Analysis

Technical impact

The Oracle Mobile Application Server product contains a flaw in the MWA Terminal Server component that allows an unauthenticated attacker with network access via TCP to bypass the authentication mechanism. A successful exploitation lets the attacker read any critical data exposed by the server and gain full access to all data the server can serve, while also being able to trigger a partial denial‑of‑service condition. The flaw carries a CVSS v3.1 base score of 8.2, indicating high confidentiality impact and moderate availability impact.

Affected Systems

Oracle Mobile Application Server, part of Oracle E‑Business Suite, is affected for all supported releases from version 12.2.3 through 12.2.15. No other vendors or product versions are listed as impacted by this vulnerability.

Risk and Exploitability

The vulnerability’s CVSS score of 8.2 signals high severity, but the EPSS score of less than 1 % indicates a very low probability of exploitation at this time, and the issue is not listed in the CISA KEV catalog. Nonetheless, any remote actor who can reach the server over TCP, as it requires no prior authentication and can be performed by an unauthenticated connection. The impact would be complete compromise of the server’s data and a partial denial‑of‑service.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Oracle Mobile Application Server

affected

Version	Status	Constraints
`12.2.3`	affected	≤ 12.2.15

Configuration 1 [-]

cpe:2.3:a:oracle:mobile_application_server:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Mobile Application Server

Version	Status	Scheme	Platform
`[12.2.3,12.2.15]`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply the latest Oracle Mobile Application Server patch or upgrade to a version that includes the fix for the authentication bypass.
Restrict inbound TCP traffic to the server by configuring firewall rules or network segmentation to allow only trusted hosts.
Monitor server logs and system activity for unexplained access attempts and for indicators of a partial denial‑of‑service attack.

Generated by OpenCVE AI on September 21, 2026 at 22:36 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.443% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://www.oracle.com/security-alerts/cspusep2026.html

History

Sep 21, 2026 11:00 PM Title updated View changes

Type	Values Removed	Values Added
Title	Unauthenticated Remote Access Vulnerability in Oracle Mobile Application Server

Sep 21, 2026 8:30 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-306
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 20, 2026 7:45 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated Remote Access Vulnerability in Oracle Mobile Application Server
Weaknesses		CWE-287

Sep 18, 2026 4:45 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Authentication Bypass in Oracle Mobile Application Server MWA Terminal Server
Weaknesses	CWE-287

Sep 17, 2026 1:00 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Authentication Bypass in Oracle Mobile Application Server MWA Terminal Server
Weaknesses		CWE-287

Sep 15, 2026 8:15 PM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Mobile Application Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Mobile Application Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Mobile Application Server. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).
First Time appeared		Oracle Oracle mobile Application Server
CPEs		cpe:2.3:a:oracle:mobile_application_server::::::::
Vendors & Products		Oracle Oracle mobile Application Server
References		https://www.oracle.com/security-alerts/cspusep2026.html
Metrics		cvssV3_1 `{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L'}`