SB2026012078 - Information disclosure in Oracle Essbase
Published: January 20, 2026
Security Bulletin ID
SB2026012078
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2025-66566)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the application insufficiently clears the output buffer in Java-based decompressor implementations. In applications where the output buffer is reused without being cleared, this may lead to disclosure of sensitive data.
Note, JNI-based implementations are not affected.
Remediation
Install update from vendor's website.