CVE-2026-83355 Auth bypass in Oracle Enterprise Manager for Fusion Middleware
Unauthenticated attackers can bypass authentication to take over Oracle Enterprise Manager for Fusion Middleware via HTTP.
- 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-2026-83355?
CVE-2026-83355 is a critical authentication bypass vulnerability in Oracle Enterprise Manager for Fusion Middleware, 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 Enterprise Manager for Fusion Middleware product of Oracle Enterprise Manager (component: Metrics). Supported versions that are affected are 13.5 and 24.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Enterprise Manager for Fusion Middleware. Successful attacks of this vulnerability can result in takeover of Oracle Enterprise Manager for Fusion Middleware. 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).
Which versions are affected by CVE-2026-83355?
How do I fix CVE-2026-83355?
No fix has been published for CVE-2026-83355 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-2026-83355 being exploited?
There is no known exploitation of CVE-2026-83355 in the wild and no public exploit code.
Sources
Also known as GHSA-xh3q-vmfm-mvjc.