CVE-2020-2551
Published: November 16, 2023
Official Description
Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server.
CISA KEV Advisory
Oracle Fusion Middleware Unspecified Vulnerability
Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
Oracle Fusion Middleware's WLS Core Components contain an unspecified vulnerability that allows an unauthenticated attacker to compromise WebLogic Server via IIOP network access. The high EPSS score of 0.94412 indicates a very high likelihood of exploitation, making this a critical vulnerability.
This vulnerability is actively exploited in the wild and is listed in CISA's KEV catalog, confirming its confirmed exploitation. The remote nature of the attack via IIOP makes it a significant threat.
Apply the latest security patches and updates for Oracle Fusion Middleware and WebLogic Server. Restrict IIOP network access to trusted sources only and implement network segmentation.
Technical Analysis
CVE-2020-2551 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2020-2551 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-2551 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1