Oracle SOA Suite: Authentication bypass in Enterprise Scheduling System
Summary
Oracle SOA Suite, component Enterprise Scheduling System, contains a critical flaw that allows unauthenticated attackers with network access via SOAP to compromise the product. According to the NVD description, a successful attack can result in takeover of Oracle SOA Suite. The CVSS base score is 9.8; no user interaction is required and the attack complexity is low.
Affected
- Oracle SOA Suite 12.2.1.4.0
- Oracle SOA Suite 14.1.2.0.0
Fixed in
- Fixed in Oracle's Critical Patch Update of October 2026 (CPU Oct 2026).
- Patch numbers per version: Unknown. Check the Fusion Middleware patch availability table in the Oracle advisory.
Workaround
- Unknown. Oracle has not been verified as providing a workaround.
- Unverified interim measure: if the Enterprise Scheduling System component is not required, disable it or restrict access to its SOAP endpoint with strict authentication and authorization controls.
Exploitation
- CISA SSVC: Exploitation none, Automatable yes, Technical Impact total.
- Not listed in CISA KEV (per OpenCVE). EPSS below 1%.
- No public proof-of-concept found in limited searches; this does not prove none exists.
Our recommendation
- Check whether Oracle SOA Suite is deployed, and whether the SOAP endpoint of the Enterprise Scheduling System is reachable from the internet or untrusted internal networks.
- Apply the October 2026 CPU patches for SOA Suite 12.2.1.4.0 and 14.1.2.0.0 as a priority, and check the other SOA Suite fixes in the same CPU.
- If patching is not possible immediately, disable the component or restrict network access to it.
- Monitor SOAP endpoint logs for unexpected requests and watch for public exploit code.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update Advisory October 2026 www.oracle.com
- NVD data mirror (vulners) vulners.com
- OpenCVE CVE-2026-91233 app.opencve.io
- Oracle CPU October 2026 blog blogs.oracle.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 17:12.
Original description (NVD)
Vulnerability in the Oracle SOA Suite product of Oracle Fusion Middleware (component: Enterprise Scheduling System). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Oracle SOA Suite. Successful attacks of this vulnerability can result in takeover of Oracle SOA Suite. 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).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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