CVE-2026-83462 Auth bypass in Oracle Mobile Application Server

Critical 9.8 Published 15 Sep 2026 Updated 15 Sep 2026

Unauthenticated attackers can take over the Oracle Mobile Application Server via network access due to missing authentication checks.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-83462?

CVE-2026-83462 is a critical authentication bypass vulnerability in Oracle Mobile Application Server, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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 takeover of Oracle Mobile Application 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).

Weakness: CWE-306, CWE-287

Which versions are affected by CVE-2026-83462?

It affects 1 product.

Products include Oracle Mobile Application Server.

How do I fix CVE-2026-83462?

No fix has been published for CVE-2026-83462 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-83462 being exploited?

There is no known exploitation of CVE-2026-83462 in the wild and no public exploit code.

Sources

Also known as GHSA-jxhp-5jq7-4mmc.