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How CVE-2026-60667 Works
CVE-2026-60667 is a vulnerability residing in the Core component of Oracle PeopleSoft Enterprise Human Capital Management (HCM) Human Resources. The flaw is classified as an Improper Access Control issue (CWE-284). It affects version 9.2 of the software. The vulnerability is considered difficult to exploit due to a high attack complexity, but it does not require authentication, making it a serious concern for any exposed instance.
An unauthenticated attacker with network access to the PeopleSoft server via the TCP protocol can trigger this vulnerability. The core of the issue lies in how the application handles access controls for specific internal functions. By sending a series of specially crafted TCP packets to the vulnerable service, an attacker can bypass the normal authentication and authorization checks.
Successful exploitation allows the attacker to perform two distinct malicious actions. First, they can gain unauthorized create, delete, or modify access to critical data within the PeopleSoft HCM database. This could include employee records, payroll information, or other sensitive human resources data. Second, the attacker can cause a hang or a frequently repeatable crash of the PeopleSoft application, leading to a complete denial of service (DoS).
The vulnerability is particularly dangerous because it grants the attacker a high degree of control over both data integrity and system availability, all without needing any valid user credentials. The attack vector is remote, meaning it can be launched from anywhere on the network, and the only prerequisite is that the target system is reachable over TCP. The technical root cause is an improper validation of access rights within the Core component, allowing an external actor to invoke privileged functions that should be restricted to authenticated administrators.
At the time of analysis, the exploit probability is considered low (EPSS score < 1%) and the vulnerability is not listed in CISA’s Known Exploited Vulnerabilities catalog. However, given the potential impact on data integrity and availability, it poses a significant risk to organizations that have not yet applied the necessary patches.
DailyCVE Form:
Platform: Oracle PeopleSoft
Version: 9.2
Vulnerability: Improper Access Control
Severity: 7.4 High
date: 2026-07-21
Prediction: July 2026 CPU
What Undercode Say
Analytics:
- Exploit Attempts Detected: 0 (low activity)
- Public PoC Availability: None reported
- CISA KEV Catalog: Not listed
- EPSS Score: < 1%
- CVSS Base Score: 7.4 (High)
- Attack Vector: Network (N)
- Attack Complexity: High (H)
- Privileges Required: None (N)
- User Interaction: None (N)
Bash Commands & Codes:
Check for PeopleSoft version running on a host:
Check the PeopleTools version via HTTP response headers curl -s -I http://<PEOPLESOFT_HOST>:<PORT>/psp/ | grep "Server:" Query the database for version information (if direct DB access is available) sqlplus -s peopleSoftUser/password@//<DB_HOST>:<PORT>/<SID> <<EOF SELECT FROM PSVERSION; EOF
Monitor for potential exploitation attempts via TCP traffic analysis:
Monitor for unusual TCP traffic patterns to the PeopleSoft port (default 8000) sudo tcpdump -i any -nn 'tcp port 8000 and (tcp[bash] & 0x02 != 0)' Search application logs for authentication bypass indicators grep -i "authentication failed" /app/peopleSoft/logs/.log | wc -l Check for unexpected crashes or core dumps find /app/peopleSoft -name ".core" -mtime -7
Check for the July 2026 CPU patch level:
Verify the applied patch level by checking the release notes file cat /app/peopleSoft/CFG_HOME/RELEASE_INFO.txt | grep "CPU_JUL_2026"
Exploit
The exploitation of CVE-2026-60667 is not trivial due to its high attack complexity. However, a remote, unauthenticated attacker can craft a malicious TCP payload that targets the Core component’s access control routines. The exploit involves sending a sequence of packets designed to trigger a race condition or bypass a logic gate, allowing the attacker to execute privileged functions. Once the flaw is triggered, the attacker can issue arbitrary data manipulation commands, leading to unauthorized modifications of critical HCM records. Concurrently, the same payload can cause the application process to hang or crash repeatedly, resulting in a complete denial of service. No public exploit code is known to exist at this time, but the theoretical attack vector is well-understood.
Protection
- Patch Application: The primary protection is to apply the Oracle Critical Patch Update (CPU) released in July 2026, which addresses this vulnerability in PeopleSoft Enterprise HCM Human Resources 9.2.
- Network Restriction: Restrict network access to the PeopleSoft server by implementing strict firewall rules. Allow traffic only from trusted IP ranges and block all other inbound TCP connections to the PeopleSoft ports.
- Monitoring and Logging: Enable comprehensive application logging and monitor for abnormal data modification patterns or frequent application crashes, which could indicate an attempted exploitation.
- Intrusion Detection: Deploy intrusion detection/prevention systems (IDS/IPS) to alert on or block anomalous TCP traffic targeting known PeopleSoft services.
- Least Privilege: Ensure that the database and application accounts used by PeopleSoft operate with the minimum necessary privileges to limit the potential damage from a successful compromise.
Impact
Successful exploitation of CVE-2026-60667 has a high impact on both integrity and availability. An attacker can:
– Modify Critical Data: Unauthorized creation, deletion, or modification of all accessible PeopleSoft Enterprise HCM Human Resources data, including sensitive employee information, payroll, and benefits records.
– Cause Denial of Service: Trigger a hang or frequently repeatable crash of the application, leading to a complete denial of service (DoS) for all users.
– Compliance Breach: Data manipulation and service disruption can lead to severe compliance violations (e.g., GDPR, HIPAA) and significant financial and reputational damage.
– Business Disruption: The inability to access HR systems can halt critical business operations, including payroll processing, employee onboarding, and benefits management.
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Sources:
Reported By: nvd.nist.gov
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