CVE-2026-33613: Remote Code Execution in generateSrpArray Function

CVE-2026-33613 is a remote code execution (RCE) vulnerability affecting the generateSrpArray function due to improper neutralization of special elements used in an OS command. Successful exploitation allows a remote attacker to achieve full system compromise. This vulnerability is triggered by writing arbitrary data to the user table, representing a significant security risk if combined with other vulnerabilities that enable such data manipulation. The vulnerability was published on April 2, 2026, and reported by CERT VDE. Defenders should prioritize investigating any suspicious activity related to user table modifications and monitor for unexpected command execution originating from the generateSrpArray function. The CVSS v3.1 score is 7.2, indicating a high severity.

Attack Chain

1. Attacker gains initial access through an external vulnerability or compromised credentials.
2. Attacker leverages this access to inject arbitrary data into the user table.
3. The system processes the malicious data in the user table through the generateSrpArray function.
4. Due to improper neutralization of special elements, the injected data is interpreted as an OS command.
5. The generateSrpArray function executes the attacker-controlled OS command.
6. The attacker gains remote code execution with the privileges of the generateSrpArray function.
7. The attacker escalates privileges to gain full system control.
8. The attacker performs malicious activities, such as data exfiltration, installing backdoors, or causing denial of service.

Impact

Successful exploitation of CVE-2026-33613 leads to complete system compromise, granting the attacker full control over the affected system. This can result in data breaches, service disruption, and significant financial losses. While the number of potential victims and targeted sectors are currently unknown, any system utilizing the vulnerable generateSrpArray function is at risk. Given the high CVSS score (7.2), organizations should prioritize patching and mitigation efforts.

Recommendation

• Monitor for unusual writes or modifications to the user table using file integrity monitoring or database auditing, to identify potential exploitation attempts (file_event, registry_set).
• Implement input validation and sanitization for any data processed by the generateSrpArray function to prevent OS command injection (webserver, linux/windows).
• Deploy the provided Sigma rules to detect potential exploitation attempts and post-exploitation activity (process_creation).
• Investigate any processes spawned by the generateSrpArray function, especially those with unusual command-line arguments, using endpoint detection and response (EDR) solutions.