HOMEVULNERABILITIESCVE-2020-2551
HIGHCISA KEVIN THE WILD

CVE-2020-2551

Published: November 16, 2023

EPSS:94.41%probability of exploitation in 30 daysPercentile:100.0th

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.

NVD Source

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.

Added to KEV: 2023-11-16Federal patch deadline: 2023-12-07
Required Action (CISA)

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.

Recommended Action

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.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Oracle
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

Quick Facts

CVE IDCVE-2020-2551
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)94.41%
PublishedNov 16, 2023

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.