Oracle SOA Suite: Improper access control in Adapters component
Summary
Oracle SOA Suite versions 12.2.1.4.0 and 14.1.2.0.0 contain an improper access control flaw in the Adapters component, rated CVSS 9.9 (critical). An attacker with a low-privileged account and network access via HTTP can fully compromise SOA Suite without user interaction. Because the scope is changed, the compromise can also affect connected systems and resources.
Affected
- Oracle SOA Suite 12.2.1.4.0
- Oracle SOA Suite 14.1.2.0.0
- Other or patched builds: Unknown.
Fixed in
- Fix included in Oracle's October 2026 Critical Patch Update (released 20 October 2026).
- Specific patch number and fixed build per branch: Unknown. Check Oracle's advisory.
Workaround
- Unknown. The CVE record provides no vendor workaround.
- Until patched, restrict access to SOA Suite HTTP endpoints and admin consoles to trusted networks or a VPN (generic advice, not from the vendor).
- Review SOA Suite accounts and remove unused or weak credentials.
Exploitation
- CISA SSVC: exploitation none, not automatable, total technical impact.
- Not listed in CISA KEV.
- No public proof of concept or in-the-wild exploitation found so far. The CVE is only about 10 days old, so this is not a confirmed absence.
Our recommendation
1. Inventory all SOA Suite instances and compare their versions with 12.2.1.4.0 and 14.1.2.0.0.
2. Apply the October 2026 Critical Patch Update to each affected instance after confirming the fixed build in Oracle's advisory.
3. Until patching is complete, restrict SOA HTTP and admin access and audit SOA accounts.
4. Check logs for unexpected SOA logins or adapter activity.
5. Patch CVE-2026-91231 (unauthenticated Adapters flaw, CVSS 10.0) at the same time.
6. If no SOA Suite is in use, no action is needed.
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
- OpenCVE record CVE-2026-91251 app.opencve.io
- Vulners record CVE-2026-91251 vulners.com
- Threat Frontier: Oracle October 2026 CPU, SOA Suite threatfrontier.com
- CVE Brief archive, 25 October 2026 cvebrief.com
- CSO Online: Oracle patches 1,295 security vulnerabilities in October www.csoonline.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, 15:05.
Original description (NVD)
Vulnerability in the Oracle SOA Suite product of Oracle Fusion Middleware (component: Adapters). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle SOA Suite. While the vulnerability is in Oracle SOA Suite, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle SOA Suite. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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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