CVE-2020-14750: Oracle WebLogic Server RCE Vulnerability

CVE-2020-14750 Overview

CVE-2020-14750 is a critical remote code execution vulnerability affecting the Oracle WebLogic Server product within Oracle Fusion Middleware, specifically targeting the Console component. This vulnerability allows an unauthenticated attacker with network access via HTTP to completely compromise vulnerable Oracle WebLogic Server instances, resulting in full system takeover.

The vulnerability is easily exploitable, requiring no privileges or user interaction, making it an attractive target for threat actors. It has been confirmed as actively exploited in the wild and is listed in CISA's Known Exploited Vulnerabilities catalog, underscoring the urgency for organizations to apply patches immediately.

Critical Impact

Successful exploitation enables complete takeover of Oracle WebLogic Server, allowing attackers to achieve full confidentiality, integrity, and availability compromise of the affected system.

Affected Products

• Oracle WebLogic Server 10.3.6.0.0
• Oracle WebLogic Server 12.1.3.0.0
• Oracle WebLogic Server 12.2.1.3.0
• Oracle WebLogic Server 12.2.1.4.0
• Oracle WebLogic Server 14.1.1.0.0

Discovery Timeline

• 2020-11-02 - CVE-2020-14750 published to NVD
• 2025-10-27 - Last updated in NVD database

Technical Details for CVE-2020-14750

Vulnerability Analysis

This vulnerability resides within the Administration Console component of Oracle WebLogic Server. The flaw enables unauthenticated remote attackers to execute arbitrary code on vulnerable servers through specially crafted HTTP requests. The attack surface is exposed via network-accessible HTTP endpoints, making internet-facing WebLogic deployments particularly susceptible.

The vulnerability is notable for its low attack complexity—it requires no authentication, no user interaction, and no special privileges to exploit. When successfully exploited, an attacker gains complete control over the WebLogic Server, including the ability to read, modify, or delete data, install malware, pivot to other network resources, and disrupt service availability.

This CVE is related to patches for earlier WebLogic vulnerabilities, and attackers have developed reliable exploitation techniques that are actively being used in the wild. The presence of this vulnerability in CISA's Known Exploited Vulnerabilities catalog indicates confirmed active exploitation by threat actors.

Root Cause

The vulnerability stems from insufficient access controls and input validation in the WebLogic Server Administration Console HTTP handling mechanism. The Console component fails to properly validate and restrict access to certain administrative functions, allowing unauthenticated attackers to bypass security controls and execute privileged operations remotely.

Attack Vector

Exploitation occurs via network-based HTTP requests to the vulnerable WebLogic Server Administration Console. An attacker can craft malicious HTTP requests targeting the console's handle endpoints to achieve remote code execution. The attack does not require any form of authentication or user interaction, making it trivially exploitable for any attacker with network access to the target server.

Attackers typically scan for exposed WebLogic Server instances on standard ports (commonly 7001 and 7002) and send crafted requests to the Administration Console to trigger code execution. Public exploit code is available through resources such as Packet Storm Security, further lowering the barrier for exploitation.

Detection Methods for CVE-2020-14750

Indicators of Compromise

• Unusual HTTP requests targeting WebLogic Administration Console endpoints, particularly those containing path traversal patterns or encoded characters
• Unexpected outbound network connections from WebLogic Server processes
• New or unauthorized user accounts created on WebLogic Server or underlying operating system
• Suspicious process execution originating from WebLogic Server Java processes
• Web access logs showing requests to /console/ paths with abnormal URL patterns

Detection Strategies

• Monitor HTTP traffic to WebLogic Administration Console for requests containing unusual path traversal sequences or encoded payloads
• Implement web application firewall (WAF) rules to detect and block known CVE-2020-14750 exploitation patterns
• Deploy network intrusion detection signatures targeting WebLogic exploitation attempts
• Enable detailed WebLogic Server access logging and audit trails for forensic analysis
• Correlate authentication failures with suspicious console access patterns

Monitoring Recommendations

• Continuously monitor WebLogic Server process behavior for unexpected child process spawning or command execution
• Track network connections initiated by WebLogic Server processes, especially connections to unknown external IP addresses
• Review WebLogic Server logs for authentication anomalies and unauthorized administrative actions
• Implement file integrity monitoring on WebLogic deployment directories

How to Mitigate CVE-2020-14750

Immediate Actions Required

• Apply Oracle's security patch for CVE-2020-14750 immediately as referenced in the Oracle Security Alert
• Restrict network access to the WebLogic Administration Console to trusted management networks only
• If patching is not immediately possible, disable the Administration Console or block external access at the firewall level
• Conduct an incident response assessment to determine if exploitation has already occurred
• Review system and application logs for indicators of compromise

Patch Information

Oracle has released an out-of-band security alert and patch for CVE-2020-14750. Organizations should immediately apply the security update available through the Oracle Security Alert CVE-2020-14750. This patch addresses the vulnerability across all affected WebLogic Server versions (10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0).

Given that this vulnerability is actively exploited in the wild and listed in CISA's Known Exploited Vulnerabilities Catalog, patching should be treated as an emergency priority.

Workarounds

• Block external network access to the WebLogic Administration Console (typically on ports 7001/7002) using firewall rules
• Restrict Administration Console access to localhost or internal management networks only
• Implement network segmentation to isolate WebLogic Server instances from untrusted networks
• Deploy a web application firewall (WAF) with rules to block known exploitation patterns for this vulnerability

# Example: Block external access to WebLogic Admin Console using iptables
# Only allow localhost and internal management subnet (10.0.0.0/8)
iptables -A INPUT -p tcp --dport 7001 -s 127.0.0.1 -j ACCEPT
iptables -A INPUT -p tcp --dport 7001 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 7001 -j DROP
iptables -A INPUT -p tcp --dport 7002 -s 127.0.0.1 -j ACCEPT
iptables -A INPUT -p tcp --dport 7002 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 7002 -j DROP