CVE-2026-83039: Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. While the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. in Oracle Corporation Oracle WebCenter Portal
CVE-2026-83039 is a critical vulnerability in Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0. It allows a low privileged attacker with network access via HTTP to compromise the portal, potentially leading to full takeover. The vulnerability impacts confidentiality, integrity, and availability with a CVSS 3.1 base score of 9.9. Oracle has addressed this vulnerability in their September 2026 Critical Security Patch Update.
AI Analysis
Technical Summary
This vulnerability affects the Composer component of Oracle WebCenter Portal in versions 12.2.1.4.0 and 14.1.2.0.0. It is easily exploitable by an attacker with low privileges and network access via HTTP, enabling compromise of the portal. The vulnerability has a CVSS 3.1 score of 9.9, indicating critical impact on confidentiality, integrity, and availability. Successful exploitation can result in complete takeover of Oracle WebCenter Portal and may affect additional Oracle products due to scope change. Oracle's September 2026 Critical Security Patch Update includes patches addressing this and other vulnerabilities.
Potential Impact
Successful exploitation allows an attacker with low privileges and network access to fully compromise Oracle WebCenter Portal, impacting confidentiality, integrity, and availability of the system. The compromise may extend to additional Oracle products due to the interconnected nature of the environment. The CVSS 3.1 score of 9.9 reflects the critical severity of this vulnerability.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the September 2026 Critical Security Patch Update. Users of Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0 should apply the relevant patches without delay to remediate this issue. Oracle strongly recommends staying on actively supported versions and promptly applying security patches to prevent exploitation.
CVE-2026-83039: Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. While the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. in Oracle Corporation Oracle WebCenter Portal
Description
CVE-2026-83039 is a critical vulnerability in Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0. It allows a low privileged attacker with network access via HTTP to compromise the portal, potentially leading to full takeover. The vulnerability impacts confidentiality, integrity, and availability with a CVSS 3.1 base score of 9.9. Oracle has addressed this vulnerability in their September 2026 Critical Security Patch Update.
CVSS v3.1
Score 9.9critical
Affected software
Oracle Corporation
Oracle WebCenter Portal
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Composer component of Oracle WebCenter Portal in versions 12.2.1.4.0 and 14.1.2.0.0. It is easily exploitable by an attacker with low privileges and network access via HTTP, enabling compromise of the portal. The vulnerability has a CVSS 3.1 score of 9.9, indicating critical impact on confidentiality, integrity, and availability. Successful exploitation can result in complete takeover of Oracle WebCenter Portal and may affect additional Oracle products due to scope change. Oracle's September 2026 Critical Security Patch Update includes patches addressing this and other vulnerabilities.
Potential Impact
Successful exploitation allows an attacker with low privileges and network access to fully compromise Oracle WebCenter Portal, impacting confidentiality, integrity, and availability of the system. The compromise may extend to additional Oracle products due to the interconnected nature of the environment. The CVSS 3.1 score of 9.9 reflects the critical severity of this vulnerability.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the September 2026 Critical Security Patch Update. Users of Oracle WebCenter Portal versions 12.2.1.4.0 and 14.1.2.0.0 should apply the relevant patches without delay to remediate this issue. Oracle strongly recommends staying on actively supported versions and promptly applying security patches to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-31T15:40:57.333Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspusep2026.html","vendor":"Oracle"}]
Threat ID: 6aa9a80c55bf5e2cf5537c79
Added to database: 09/15/2026, 20:18:20 UTC
Last enriched: 09/15/2026, 22:37:26 UTC
Last updated: 09/15/2026, 23:37:22 UTC
Views: 3
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