Critical SQL Injection Vulnerability: CVE-202627681
The April 2026 security patch by SAP addresses a severe SQL injection vulnerability identified as CVE-202627681, carrying a critical CVSS score of 9.9. This flaw exists within the Business Planning and Consolidation (BPC) and Business Warehouse (BW) modules. Affected systems allow low-privileged users to upload files containing arbitrary SQL statements, which are subsequently executed. Such exploitation enables attackers to execute malicious code that compromises sensitive data and disrupts operations.
Security firm Onapsis elaborates on the attack vector, emphasizing how an attacker could use the upload functionality to manipulate database records directly. This could lead to unauthorized access to financial data, data corruption, or disruption of key business processes. In addition, attackers might alter consolidation figures or manipulate reports to skew organizational decision-making.
SAP has addressed this vulnerability by entirely deactivating the executable code associated with the upload functionality. Organizations using BPC and BW must apply the relevant updates promptly to eliminate the risk of exploitation. Failure to act could expose critical financial and operational systems to significant threats.
Authorization Flaws in ERP and S4 HANA: CVE-202634256
Another high-severity vulnerability patched this month is CVE-202634256, which involves missing authorization checks in ERP and S4 HANA systems. This flaw allows attackers to execute ABAP programs and rewrite existing executable code. The implications include unauthorized program manipulation, which could compromise system integrity and operational reliability.
Jonathan Stross from Pathlock highlights the risk of exploitation, warning that such vulnerabilities could allow attackers to bypass user interaction mechanisms and rewrite executable programs. Without stringent access controls, organizations face the possibility of unauthorized database manipulation and unauthorized program execution.
To mitigate this threat, SAP has introduced updated authorization checks to ensure only privileged users can execute sensitive ABAP programs. Businesses should verify their systems for unpatched vulnerabilities and ensure all security notes are applied to safeguard their infrastructure.
Medium-Severity Vulnerabilities Across SAP Platforms
The patch also addresses 15 new and one updated medium-severity vulnerabilities across various SAP products, including BusinessObjects, S4HANA, Supplier Relationship Management, NetWeaver, and HANA systems. These flaws encompass risks such as information disclosure, denial-of-service (DoS) attacks, cross-site scripting (XSS), and code injection vulnerabilities.
For instance, vulnerabilities in HANA Database Explorer and Material Master Application could allow attackers to redirect users to malicious content or execute code within victim browsers. While these flaws may not be immediately crippling, they present opportunities for attackers to compromise system integrity and user trust.
Organizations are encouraged to analyze their exposure to these vulnerabilities and apply the patches to reduce potential entry points for attackers. Regular security assessments and monitoring for suspicious activity can further enhance resilience.
Low-Severity Code Injection Issues
Two low-severity vulnerabilities in NetWeaver and Landscape Transformation were also addressed in this patch. Although less critical, these flaws could still allow unauthorized code injection, potentially laying the groundwork for future attacks or internal disruptions.
Given their lower risk profile, these vulnerabilities may not demand immediate attention compared to critical or high-severity flaws. However, they should not be overlooked as attackers often exploit neglected weaknesses to gain initial access.
Businesses should include these patches in their regular update cycles to maintain a secure operational environment. Preventing even minor vulnerabilities from becoming footholds for larger attacks is essential in todays threat landscape.
Applying Security Notes: A Strategic Imperative
SAP advises users to apply all released security notes promptly to address vulnerabilities and ensure system integrity. Unpatched systems are at greater risk of exploitation, which could lead to data theft, operational disruptions, and reputational damage.
Organizations should establish a structured approach to patch management, prioritizing critical and high-severity updates first. Automating this process through dedicated tools can reduce the time required to secure systems and minimize human error.
Collaborating with specialized cybersecurity experts to assess vulnerabilities and apply patches effectively can further enhance security. Proactive measures, such as routine audits and employee training, will also play a key role in mitigating risks associated with software vulnerabilities.