6 min read
By: RedLegg's Cyber Threat Intelligence Team
About:
CVE-2026-21992 is a critical remote code execution vulnerability affecting Oracle Identity Manager and Oracle Web Services Manager, components of Oracle Fusion Middleware. The flaw is caused by missing authentication for a critical function, allowing an unauthenticated attacker with network access via HTTP to compromise affected systems.
Successful exploitation requires no credentials or user interaction and may result in full system takeover, including execution of arbitrary code and complete compromise of the application and underlying infrastructure.
RedLegg will occasionally communicate vulnerabilities released outside the usual release schedule to provide additional value to our customers. These emergency bulletins describe vulnerabilities or threats we classify as the highest severity level and warrant out-of-band emergency patching or mitigation action.
VULNERABILITIES
Remote Code Execution Vulnerability in Microsoft Office SharePoint
CVSS Score: 9.8 (Critical, CVSS v3.1)
Identifier: CVE-2026-21992
PoC or Exploitation:
As of the Oracle security alert and current public reporting, there are no confirmed reports of active exploitation in the wild and no publicly available proof-of-concept exploit code.
Update/ Patch:
Oracle released an out-of-band security alert to address this vulnerability, indicating elevated risk and urgency outside the normal patch cycle.
Affected versions include:
Oracle Identity Manager 12.2.1.4.0 and 14.1.2.1.0
Oracle Web Services Manager 12.2.1.4.0 and 14.1.2.1.0
Organizations should apply the patches provided in the Oracle security alert immediately.
Oracle advisory and patch guidance:
https://www.oracle.com/security-alerts/alert-cve-2026-21992.html
Description:
CVE-2026-21992 is a critical remote code execution vulnerability affecting Oracle Identity Manager and Oracle Web Services Manager, components of Oracle Fusion Middleware.
The vulnerability is caused by missing authentication for a critical function, allowing an unauthenticated attacker with network access via HTTP to compromise affected systems.
An attacker can exploit this flaw remotely without credentials or user interaction. Successful exploitation can result in full takeover of the affected system, including execution of arbitrary code and complete compromise of the application.
Mitigation Recommendation:
Immediately apply the Oracle security patches addressing CVE-2026-21992.
Restrict network access to Oracle Identity Manager and Oracle Web Services Manager interfaces to trusted internal networks only.
Implement network segmentation and firewall controls to prevent exposure of management and API interfaces to the internet.
Monitor logs for suspicious HTTP requests, unexpected authentication behavior, or abnormal service activity.
