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CVE-2026-60458 is a critical vulnerability in Oracle WebCenter Enterprise Capture, a component of Oracle Fusion Middleware responsible for enterprise document capture and processing workflows. The flaw resides in the Client Bundle subcomponent and affects versions 12.2.1.4.0 and 14.1.2.0.0. The vulnerability is triggered when the Client Bundle exposes services over the T3 and IIOP protocols—the native RPC protocols used by Oracle WebLogic Server for communication between clients, servers, and other Java EE components.
The root cause is insufficient validation of inbound protocol payloads and contextual data. When a low-privileged authenticated user sends a crafted request over T3 or IIOP to the Client Bundle, the component fails to properly enforce authorization boundaries. This allows the attacker to escalate their privileges within the WebCenter Enterprise Capture application, effectively bypassing the intended access controls. Because the vulnerability exists in a core middleware component that interacts with other Oracle Fusion Middleware products, the attack can break out of the original application scope (CVSS Scope: Changed). This means a compromise of WebCenter Enterprise Capture can cascade to additional Oracle products deployed in the same infrastructure, such as WebCenter Portal, Content Server, or even the underlying WebLogic domain.
The attack requires network access to the T3 (typically port 7001) or IIOP (typically port 7002) endpoints, but does not require any user interaction. The attacker only needs low-privileged credentials—credentials that might be obtained through phishing, brute force, or by compromising a lesser-privileged service account. Once exploited, the attacker gains the ability to read, modify, or delete any data managed by WebCenter Enterprise Capture, and can also execute arbitrary code with the privileges of the WebLogic server process. The CVSS v3.1 base score is 9.9 out of 10.0, reflecting the ease of exploitation, the low complexity of the attack, and the severe impact on confidentiality, integrity, and availability.
The vulnerability was patched by Oracle as part of the July 2026 Critical Patch Update (CPU). The fix adds additional security filters and validation logic to the T3/IIOP request handling path within the Client Bundle, and also corrects internal dependency handling issues that contributed to the flaw. Organizations running affected versions are strongly advised to apply the CPU patches immediately, as the vulnerability is considered easily exploitable and the potential for widespread exploitation is high. No public exploit code has been released as of the time of this writing, but the technical details are expected to be shared in security research communities soon.
DailyCVE Form:
Platform: Oracle Fusion Middleware
Version: 12.2.1.4.0, 14.1.2.0.0
Vulnerability: Privilege Escalation / Improper Privilege Management
Severity: Critical (CVSS 9.9)
date: 2026-07-21
Prediction: 2026-07-21 (Oracle CPU July 2026)
What Undercode Say:
Analytics indicate that the attack surface is concentrated on WebLogic T3/IIOP listeners. The following commands and scripts can be used to assess exposure and simulate validation checks.
Check WebLogic version to confirm affected releases
$ weblogic_version=$(grep -Po 'WebLogic Server Version: \K[0-9.]+' $DOMAIN_HOME/servers/AdminServer/logs/AdminServer.log | head -1)
$ echo "WebLogic version: $weblogic_version"
Scan for open T3 (7001) and IIOP (7002) ports
$ nmap -p 7001,7002 --open --script t3-info <target-ip>
Use WebLogic's WLST to query deployed Capture versions
$ java weblogic.WLST -c "connect('weblogic','password','t3://localhost:7001'); listApplications(); exit()"
Conceptual Python snippet to test for the flaw (for research only):
import socket
import struct
Craft a malformed T3 handshake with oversized payload
def test_t3_exploit(host, port=7001):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((host, port))
Send T3 protocol header with invalid length field
payload = b"t3" + struct.pack(">H", 0xFFFF) + b"\x00"0x1000
sock.send(payload)
response = sock.recv(1024)
if b"weblogic" in response.lower():
print("Vulnerable T3 handler detected (requires further validation)")
sock.close()
Exploit:
An attacker with low-privileged credentials can exploit CVE-2026-60458 by sending a specially crafted T3 or IIOP request to the Client Bundle. The request contains a serialized object payload that, when deserialized by the vulnerable component, triggers an insecure privilege escalation routine. Because the Client Bundle does not properly validate the caller’s granted roles against the requested operation, the attacker can invoke administrative functions—such as creating new Capture batches, modifying system configurations, or deploying malicious code—without the necessary permissions. The attack chain is entirely remote, requires no user interaction, and can be automated via simple socket scripts or by leveraging existing T3/IIOP client libraries. The scope change aspect means that after compromising the Capture instance, the attacker can pivot to other Oracle Fusion Middleware products that trust the Capture service, potentially leading to a full domain takeover.
Protection:
- Apply the Oracle Critical Patch Update for July 2026 immediately. The patches for versions 12.2.1.4.0 and 14.1.2.0.0 are available via Oracle Support.
- If patching is not immediately possible, restrict network access to T3 (port 7001) and IIOP (port 7002) to only trusted internal subnets using firewall rules or WebLogic connection filters.
- In WebLogic Server, configure connection filters to block or limit T3/IIOP traffic from untrusted IP ranges:
<connection-filter-rule> allow t3 t3s http https iiop iiopssl (allow from trusted IPs) deny t3 t3s iiop iiopssl (deny all others) </connection-filter-rule>
- Enforce strong authentication and rotate credentials for all WebLogic and Capture service accounts. Monitor audit logs for anomalous T3/IIOP connection attempts.
- Consider deploying a Web Application Firewall (WAF) or an API gateway that can inspect and block malformed T3/IIOP traffic patterns.
Impact:
Successful exploitation of CVE-2026-60458 allows a low-privileged attacker to completely take over the Oracle WebCenter Enterprise Capture instance. The attacker can read, modify, or delete any captured documents and metadata, compromising the confidentiality and integrity of all enterprise content managed through the system. Because the vulnerability has a “Scope: Changed” metric, the attack can also spread to other Oracle Fusion Middleware products that interact with WebCenter Capture, potentially leading to a full compromise of the entire middleware stack—including WebCenter Portal, Content Server, and even the underlying WebLogic domain. The availability impact is equally severe, as the attacker could shut down Capture services or corrupt batch processing workflows, causing business disruption. With a CVSS base score of 9.9, this vulnerability is considered critical and should be treated as a top-priority remediation item for any organization using the affected versions.
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Sources:
Reported By: nvd.nist.gov
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