Oracle HTTP Server: Improper privilege management in OSSL Module
Summary
Oracle HTTP Server 12.2.1.4.0 (Oracle Fusion Middleware) contains a flaw in the OSSL Module, classified as CWE-269 (Improper Privilege Management). An attacker with low privileges and logon access to the host can compromise the server and take it over, with high impact on confidentiality, integrity and availability (CVSS 7.8). The attack requires local access, so the flaw is not directly reachable from the internet, but risk rises where many users have shell or logon access.
Affected
- Oracle HTTP Server 12.2.1.4.0 (Oracle Fusion Middleware, OSSL Module)
Fixed in
Unknown. Check the Oracle October 2026 Critical Patch Update advisory and My Oracle Support for the fixed release of the 12.2.1.4.0 line.
Workaround
Unknown. No vendor workaround is documented.
Exploitation
- No known exploitation.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- No public proof of concept found in the sources reviewed.
- EPSS score 0.00145 (low).
Our recommendation
- Check whether Oracle HTTP Server 12.2.1.4.0 is in use.
- If it is in use, apply the Oracle October 2026 Critical Patch Update fix in the next maintenance window.
- Restrict local shell and logon access to hosts running Oracle HTTP Server.
- Also check and patch CVE-2026-87347 in the same component, which is network-reachable and rated higher.
- If Oracle HTTP Server is not in use, no action is needed beyond confirming its absence.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update October 2026 www.oracle.com
- Oracle Security Alerts index www.oracle.com
- CVE record summary (OpenCVE) app.opencve.io
- CVE record summary (Vulners) vulners.com
- CVE record summary (Strix) www.strix.ai
- Sibling CVE-2026-87347 (Vulners) vulners.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 1 Nov 2026, 23:15.
Original description (NVD)
Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: OSSL Module). The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle HTTP Server executes to compromise Oracle HTTP Server. Successful attacks of this vulnerability can result in takeover of Oracle HTTP Server. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/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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