CVE-2025-42877 in Web Dispatcher
Summary
by MITRE • 12/09/2025
SAP Web Dispatcher, Internet Communication Manager (ICM), and SAP Content Server allow an unauthenticated user to exploit logical errors that lead to a memory corruption vulnerability. This results in high impact on the availability with no impact on confidentiality or integrity of the application.
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Analysis
by VulDB Data Team • 12/09/2025
SAP Web Dispatcher, Internet Communication Manager, and SAP Content Server present a critical memory corruption vulnerability that stems from logical errors within their processing mechanisms. This vulnerability allows unauthenticated attackers to exploit flaws in the software's memory management systems, potentially leading to system instability and service disruption. The flaw exists in the way these SAP components handle specific input conditions or processing sequences, creating opportunities for memory corruption that can be triggered without requiring any authentication credentials. The vulnerability affects the availability aspect of the system's security posture while maintaining the confidentiality and integrity of the application data.
The technical exploitation of this vulnerability occurs through logical error conditions that cause improper memory handling within the SAP application stack. Attackers can craft specific inputs or processing requests that trigger memory corruption behaviors, potentially leading to application crashes, system hangs, or denial of service conditions. The memory corruption manifests when the software encounters unexpected processing scenarios that cause it to write beyond allocated memory boundaries or corrupt memory structures. This type of vulnerability typically falls under the CWE-121 category of stack-based buffer overflow or similar memory corruption weaknesses that can be exploited through careful manipulation of input data. The vulnerability's impact on availability is particularly concerning as it can render critical SAP services inaccessible to legitimate users, potentially disrupting business operations.
The operational impact of this vulnerability extends beyond simple service disruption to encompass broader business continuity concerns. Organizations relying on SAP Web Dispatcher, ICM, and Content Server components face potential downtime that can affect enterprise resource planning, customer relationship management, and other critical business functions. The unauthenticated nature of the exploit means that attackers can initiate attacks from external networks without requiring valid credentials or prior access to the system. This vulnerability aligns with ATT&CK technique T1499.004 for network denial of service and represents a significant risk to SAP environments that may not have adequate network segmentation or monitoring in place to detect such exploitation attempts. The lack of confidentiality and integrity impact suggests that while the system may become unavailable, sensitive data remains protected from unauthorized access or modification.
Organizations must implement immediate mitigations to address this vulnerability through patch management and network security controls. SAP has released patches addressing the memory corruption logic errors in affected versions, which should be deployed as a priority to prevent exploitation. Network segmentation strategies should be enhanced to limit access to SAP components, particularly those exposed to untrusted networks. Monitoring solutions should be configured to detect unusual patterns of requests that might indicate exploitation attempts, including monitoring for memory-related error conditions or service disruptions. Security teams should implement intrusion detection systems that can identify potential exploitation patterns and establish incident response procedures for handling denial of service conditions affecting SAP infrastructure. Regular vulnerability assessments should be conducted to identify similar logical error conditions that may exist in other SAP components or related systems.